maine educational assessment (mea) for science · 2018-10-09 · 2 2017 - 2018 maine educational...

Maine Educational Assessment (MEA)

for Science

2017 - 2018: EQUATING REPORT

2

2017 - 2018 Maine Educational Assessment (MEA) for Science

Equating Report

The purpose of this document is to summarize the equating results obtained from Measured

Progress for MEA for Science. Presented in this report are various program summary

statistics and specific results related to the equating study.

The results of this report are organized as follows:

1. Aggregate Results

1. Percentage of Students by Achievement Level Categories

2. Raw Scores Associated with Cutpoints

3. Calibration Report

4. Equating Item Summary Statistics

5. Summary of Psychometric QC Activities

2. Grade Subject Results

1. A/A, B/B, Delta, Test Characteristic Curve, Test Information Function, and

Cumulative Scale Score Distribution Plots

2. Lookup Tables

3. Cumulative Scale Score Distribution Tables

4. Rescore Analysis Results

5. Tabled Delta Analysis Results

6. Tabled B/B Analysis Results

7. Final Item Parameters

8. Fit Plots of Watchlist Items

The final results of this equating will be included as part of the 2017 - 2018 MEA for Science

Technical Manual. If requested, Measured Progress will distribute and/or present this report

at the next MEA TAC.

3

Section 1.1

Percentage of Students by Achievement Level Categories

4

Table 1.1.1

Percentage of Students by Achievement Level Categories

Science

Grade Year Count 1 2 3 4 3/4 Delta Ave. SS

5 2018 13260 11 28 53 8 61 -6.0 545.0

2017 13000 9 23 61 6 67 4.3 545.6

2016 13094 11 26 55 8 63 -2.0 545.0

2015 13052 9 26 58 7 65 2.0 545.7

2014 12980 8 29 53 10 63 -6.7 545.8

2013 13111 9 22 59 10 70 546.8

8 2018 12992 11 22 48 19 67 -2.0 847.5

2017 12754 10 21 49 20 69 -4.1 848.9

2016 12790 7 20 54 19 73 1.9 849.9

2015 13069 7 22 52 19 71 -2.3 849.2

2014 11857 7 19 51 23 73 3.4 850.1

2013 13644 9 21 48 22 70 849.3

11 2018 12310 21 31 43 5 48 1.2 1140.5

2017 12216 22 31 42 5 47 0.4 1140.1

2016 12291 21 33 41 6 47 3.7 1140.3

2015 10054 25 32 38 4 43 1138.7

5

Section 1.2

Raw Scores Associated with Cutpoints

6

Table 1.2.1

Raw Scores Associated with Cutpoints

Subject Grade Cut Point 2017 Actual 2018 Actual 2018 Pred

Science 5 1–2 18 18 18

2–3 26 27 27

3–4 40 40 40

Max Score 48 48 48

Science 8 1–2 19 20 20

2–3 29 29 29

3–4 43 42 43

Max Score 55 56 56

Science 11 1–2 19 18 17

2–3 28 28 27

3–4 44 46 45

Max Score 56 56 56

7

Section 1.3

Calibration Report

8

Calibration Report—Executive Summary

PARSCALE 4.1 was used for all analyses. All command files were set up in a way that all general

settings were identical to last year. For example, the calibration statement reads:

CAL GRADED,LOGISTIC,CYCLE=(150,1,1,1,1),TPRIOR,SPRIOR,GPRIOR;

Thus, a 3PLM was used for all MC items, and a Graded Response Model was specified for the

polytomous items. The logistic version of the IRT models was used, and default priors were used for

all parameter estimates. Each item occupied its own unique block in the command file, and for most

items initial guessing parameters were set to 0.25.

The resulting parameters demonstrated excellent model fit. In particular, the largest change in

parameter values (from one iteration to the next) was decreasing and tended to flatten out towards the

end of the calibration process. The number of Newton cycles to conversion for each grade/content

for the initial calibrations are listed in the following table:

Table 1.3.1

Number of Cycles to Convergence

Subject Grade Initial Cycles

Science Grade 5 31

Science Grade 8 35

Science Grade 11 41

9

For some items the guessing parameter was poorly estimated. This is not at all unusual as difficulty

in estimating the c-parameter has been well documented in the psychometric literature. This often

happens when item discrimination is low or the items are particularly easy. After carefully studying

these items we found that fixing the lower asymptote (for example to a value of 0.00) resulted in

stable and reasonable estimates for both the a and b parameters (relative to CTT statistics). This

technique also produced item parameters that resulted in excellent model fit (comparing theoretical

ICCs to observed ICCs).

Three methods of evaluating the suitability of the equating items were used: the delta analysis, the

b/b analysis and the rescore analysis. As a result of all three analyses very few items were removed

from the equating analysis. Results such as this are very common particularly, given the number of

grade/content combinations, and the number and types of items in the program. Results from these

analyses are included in Section II of this report.

Items flagged by the delta, b/b, or rescore analyses, or any item that required intervention during the

calibration process, were compiled and placed in our item watch list, which includes the final actions

taken on these items. The final watch list is presented in the following table:

10

Table 1.3.2

Final Items Watch List

Subject Grade ItemID Reason Action

Science 5 165325A c-parameter set c = 0

Science 5 165325A b/b analysis removed from equating


Science 5 228155 c-parameter set c = 0




Science 8 158375 delta analysis removed from equating

Science 8 191079A rescore analysis removed from equating

Science 8 258090 b/b analysis removed from equating

Science 8 258090 delta analysis removed from equating



Science 11 258181 b/b analysis removed from equating

11

The Stocking and Lord procedure was used to transform parameter estimates onto the operational

scale. This procedure results in constants which were applied to the resulting IRT parameters for

each grade/content. These transformation constants were found using the STUIRT program which

can be found at the CASMA website: http://www.education.uiowa.edu/casma/. The Stocking & Lord

transformation constants that were used in the equating process are listed in the following table:

Table 1.3.3

Stocking and Lord Constants

Subject Grade Slope Intercept

Science 5 1.04 0.16

Science 8 1.06 0.20

Science 11 0.93 0.15

12

Section 1.4

Equating Item Summary Statistics

13

Table 1.4.1

Equating Item Summary Statistics

Subject Grade Year

P-Value Point Biserial a b

Mean Std Dev Mean Std Dev Mean Std Dev Mean Std Dev

Science 05 2018 0.65 0.14 0.34 0.09 0.66 0.21 -0.50 1.01

Previous 0.66 0.15 0.33 0.08 0.68 0.17 -0.17 1.05

Science 08 2018 0.62 0.17 0.35 0.13 0.71 0.24 -0.26 1.19

Previous 0.64 0.13 0.35 0.10 0.70 0.21 -0.26 0.92

Science 11 2018 0.52 0.13 0.36 0.10 0.79 0.23 0.30 0.76

Previous 0.50 0.12 0.36 0.11 0.86 0.27 0.49 0.67

14

Section 1.5

Summary of Psychometric QC Activities

15

Summary of Psychometric Quality Control Activities

1. Copy match of equating items

2. Key verification process

3. Position shift analysis

4. Rescore analysis

a. Stat > 0.5 (Crit) removed

5. Delta analysis

a. Stat > 3 (Crit) removed

6. b/b analysis

a. Stat > 3 (Crit) removed

7. Equating Analysis

a. Reasonableness of item parameters

b. Low a, high SE on b, c parameter poorly estimated

c. Fit plot

d. Normal end evaluation

e. Delta plot

f. a/a plot, b/b plot

g. TCCs and information functions

h. Achievement levels and scaled score distributions

8. Watch List (items were continuously evaluated)

a. 8 criteria

b. Statistical values

c. Content

16

Section 2.1

A/A, B/B, Delta, Test Characteristic Curve, Test Information Function, and

Cumulative Scale Score Distribution Plots

26

Section 2.2

Lookup Tables

27

Table 2.2.1

Raw Score to Scale Score Lookup Table

Science Grade 5

Raw Score Theta Information

SE (Scale

Score)

Scale Score Achievement Level

2018 2017 2018 2017

0 -7.207 0.08 10.0 500 500 1 1

1 -6.709 0.11 10.0 500 500 1 1

2 -6.211 0.15 10.0 500 500 1 1

3 -5.713 0.21 10.0 500 500 1 1

4 -5.214 0.30 10.0 500 500 1 1

5 -4.716 0.43 10.0 500 500 1 1

6 -4.218 0.63 10.0 500 500 1 1

7 -3.637 1.02 10.0 504 500 1 1

8 -3.166 1.58 8.0 510 506 1 1

9 -2.818 2.21 8.0 514 510 1 1

10 -2.540 2.84 6.0 516 514 1 1

11 -2.306 3.43 6.0 518 516 1 1

12 -2.101 3.98 6.0 522 520 1 1

13 -1.917 4.46 4.0 524 522 1 1

14 -1.748 4.88 4.0 524 524 1 1

15 -1.591 5.25 4.0 526 526 1 1

16 -1.444 5.56 4.0 528 528 1 1

17 -1.303 5.83 4.0 528 528 1 1

18 -1.167 6.06 4.0 530 530 2 2

19 -1.037 6.25 4.0 532 532 2 2

20 -0.909 6.42 4.0 534 534 2 2

21 -0.785 6.56 4.0 536 536 2 2

22 -0.662 6.68 4.0 536 536 2 2

23 -0.541 6.78 4.0 538 538 2 2

24 -0.421 6.86 4.0 538 540 2 2

25 -0.301 6.92 4.0 540 540 2 2

26 -0.181 6.94 4.0 540 542 2 3

27 -0.061 6.94 4.0 542 544 3 3

28 0.061 6.91 4.0 544 544 3 3

29 0.184 6.83 4.0 546 546 3 3

30 0.309 6.70 4.0 546 548 3 3

31 0.438 6.53 4.0 548 548 3 3

32 0.570 6.31 4.0 550 550 3 3

33 0.707 6.06 4.0 550 552 3 3

34 0.849 5.76 4.0 552 552 3 3

35 0.997 5.44 4.0 554 554 3 3

36 1.154 5.10 4.0 556 556 3 3

37 1.319 4.74 4.0 558 558 3 3

38 1.494 4.38 6.0 560 560 3 3

28

Table 2.2.1 (continued)


Science Grade 5


SE (Scale

Score)


2018 2017 2018 2017

39 1.683 4.02 6.0 560 560 3 3

40 1.888 3.65 6.0 564 564 4 4

41 2.112 3.27 6.0 566 566 4 4

42 2.364 2.88 6.0 568 570 4 4

43 2.652 2.46 6.0 572 572 4 4

44 2.995 2.00 8.0 574 576 4 4

45 3.428 1.52 8.0 580 580 4 4

46 4.000 1.02 10.0 580 580 4 4

47 4.000 1.02 10.0 580 580 4 4

48 4.000 1.02 10.0 580 580 4 4

29

Table 2.2.2


Science Grade 8


SE (Scale

Score)


2018 2017 2018 2017

0 -8.955 0.01 10.0 800 800 1 1

1 -8.403 0.01 10.0 800 800 1 1

2 -7.851 0.01 10.0 800 800 1 1

3 -7.300 0.01 10.0 800 800 1 1

4 -6.748 0.02 10.0 800 800 1 1

5 -6.196 0.04 10.0 800 800 1 1

6 -5.644 0.07 10.0 800 800 1 1

7 -5.092 0.12 10.0 800 800 1 1

8 -4.540 0.25 10.0 800 800 1 1

9 -3.980 0.51 10.0 800 802 1 1

10 -3.334 1.17 10.0 800 808 1 1

11 -2.925 1.88 10.0 806 812 1 1

12 -2.621 2.59 8.0 810 814 1 1

13 -2.375 3.26 8.0 814 818 1 1

14 -2.166 3.89 8.0 816 820 1 1

15 -1.983 4.48 6.0 820 822 1 1

16 -1.819 5.03 6.0 822 824 1 1

17 -1.669 5.54 6.0 824 826 1 1

18 -1.529 6.01 6.0 826 826 1 1

19 -1.398 6.45 6.0 826 828 1 2

20 -1.274 6.86 6.0 830 830 2 2

21 -1.156 7.25 6.0 832 832 2 2

22 -1.043 7.62 6.0 832 834 2 2

23 -0.933 7.97 6.0 834 834 2 2

24 -0.827 8.30 4.0 836 836 2 2

25 -0.724 8.62 4.0 838 838 2 2

26 -0.623 8.91 4.0 838 838 2 2

27 -0.524 9.18 4.0 840 840 2 2

28 -0.426 9.41 4.0 840 840 2 2

29 -0.329 9.62 4.0 842 842 3 3

30 -0.232 9.78 4.0 844 844 3 3

31 -0.136 9.91 4.0 846 846 3 3

32 -0.040 9.98 4.0 846 846 3 3

33 0.057 10.02 4.0 848 848 3 3

34 0.154 10.00 4.0 850 850 3 3

35 0.253 9.93 4.0 852 850 3 3

36 0.353 9.81 4.0 852 852 3 3

37 0.456 9.64 4.0 854 854 3 3

38 0.561 9.41 4.0 856 856 3 3

30



Science Grade 8


SE (Scale

Score)


2018 2017 2018 2017

39 0.669 9.14 4.0 858 856 3 3

40 0.782 8.82 4.0 858 858 3 3

41 0.898 8.46 4.0 860 860 3 3

42 1.021 8.05 6.0 862 860 4 3

43 1.149 7.60 6.0 864 864 4 4

44 1.286 7.12 6.0 866 866 4 4

45 1.431 6.62 6.0 868 868 4 4

46 1.588 6.09 6.0 870 870 4 4

47 1.759 5.54 6.0 872 872 4 4

48 1.946 4.97 6.0 876 876 4 4

49 2.155 4.40 6.0 878 878 4 4

50 2.392 3.81 8.0 880 880 4 4

51 2.668 3.21 8.0 880 880 4 4

52 2.998 2.60 8.0 880 880 4 4

53 3.416 1.98 10.0 880 880 4 4

54 4.000 1.28 10.0 880 880 4 4

55 4.000 1.28 10.0 880 880 4 4

56 4.000 1.28 10.0 880 N/A 4 N/A

31

Table 2.2.3


Science Grade 11


SE (Scale

Score)


2018 2017 2018 2017

0 -15.945 0.00 10.0 1100 1100 1 1

1 -14.311 0.00 10.0 1100 1100 1 1

2 -12.677 0.00 10.0 1100 1100 1 1

3 -11.043 0.00 10.0 1100 1100 1 1

4 -9.409 0.00 10.0 1100 1100 1 1

5 -7.775 0.01 10.0 1100 1100 1 1

6 -6.141 0.03 10.0 1100 1100 1 1

7 -4.507 0.09 10.0 1100 1100 1 1

8 -2.922 0.54 10.0 1100 1100 1 1

9 -2.256 1.41 10.0 1108 1102 1 1

10 -1.874 2.43 8.0 1114 1110 1 1

11 -1.604 3.49 8.0 1118 1114 1 1

12 -1.393 4.53 6.0 1120 1116 1 1

13 -1.218 5.53 6.0 1122 1120 1 1

14 -1.066 6.49 6.0 1124 1122 1 1

15 -0.932 7.41 4.0 1126 1124 1 1

16 -0.810 8.27 4.0 1128 1126 1 1

17 -0.698 9.08 4.0 1128 1128 1 1

18 -0.593 9.83 4.0 1132 1128 2 1

19 -0.495 10.52 4.0 1132 1132 2 2

20 -0.402 11.16 4.0 1134 1132 2 2

21 -0.312 11.75 4.0 1136 1134 2 2

22 -0.226 12.29 4.0 1136 1136 2 2

23 -0.143 12.79 4.0 1138 1136 2 2

24 -0.062 13.25 4.0 1138 1138 2 2

25 0.018 13.67 4.0 1140 1140 2 2

26 0.095 14.06 4.0 1140 1140 2 2

27 0.172 14.41 4.0 1140 1140 2 2

28 0.247 14.72 4.0 1142 1142 3 3

29 0.322 15.00 4.0 1144 1144 3 3

30 0.396 15.24 4.0 1144 1146 3 3

31 0.470 15.44 4.0 1146 1146 3 3

32 0.544 15.59 4.0 1146 1148 3 3

33 0.619 15.69 4.0 1148 1148 3 3

34 0.693 15.74 4.0 1148 1150 3 3

35 0.768 15.73 4.0 1150 1150 3 3

36 0.844 15.67 4.0 1150 1152 3 3

37 0.922 15.54 4.0 1152 1154 3 3

38 1.000 15.34 4.0 1152 1154 3 3

32



Science Grade 11


SE (Scale

Score)


2018 2017 2018 2017

39 1.081 15.07 4.0 1154 1156 3 3

40 1.164 14.74 4.0 1154 1158 3 3

41 1.249 14.32 4.0 1156 1158 3 3

42 1.338 13.84 4.0 1158 1160 3 3

43 1.430 13.28 4.0 1158 1160 3 3

44 1.527 12.64 4.0 1160 1162 3 4

45 1.630 11.94 4.0 1160 1164 3 4

46 1.739 11.17 4.0 1162 1166 4 4

47 1.856 10.33 4.0 1164 1168 4 4

48 1.984 9.44 4.0 1166 1170 4 4

49 2.124 8.50 4.0 1168 1174 4 4

50 2.281 7.50 4.0 1170 1176 4 4

51 2.461 6.44 6.0 1172 1180 4 4

52 2.674 5.32 6.0 1176 1180 4 4

53 2.939 4.11 6.0 1178 1180 4 4

54 3.302 2.79 8.0 1180 1180 4 4

55 3.916 1.33 10.0 1180 1180 4 4

56 4.000 1.20 10.0 1180 1180 4 4

33

Section 2.3

Cumulative Scale Score Distribution Tables

34

Table 2.3.1

Cumulative Scale Score Distribution

Science Grade 5

Scale Score N Proportion Cumulative Proportion

500 46 0.00347 0.00347

504 30 0.00226 0.00573

510 54 0.00407 0.00980

514 53 0.00400 0.01380

516 85 0.00641 0.02021

518 100 0.00754 0.02775

522 120 0.00905 0.03680

524 302 0.02278 0.05958

526 197 0.01486 0.07443

528 498 0.03756 0.11199

530 278 0.02097 0.13296

532 310 0.02338 0.15633

534 329 0.02481 0.18115

536 751 0.05664 0.23778

538 937 0.07066 0.30845

540 1057 0.07971 0.38816

542 574 0.04329 0.43145

544 602 0.04540 0.47685

546 1190 0.08974 0.56659

548 596 0.04495 0.61154

550 1184 0.08929 0.70083

552 575 0.04336 0.74419

554 555 0.04186 0.78605

556 548 0.04133 0.82738

558 475 0.03582 0.86320

560 775 0.05845 0.92164

564 330 0.02489 0.94653

566 238 0.01795 0.96448

568 204 0.01538 0.97986

572 129 0.00973 0.98959

574 65 0.00490 0.99449

580 73 0.00551 1.00000

35

Table 2.3.2


Science Grade 8


800 209 0.01609 0.01609

806 83 0.00639 0.02248

810 90 0.00693 0.02940

814 116 0.00893 0.03833

816 131 0.01008 0.04841

820 164 0.01262 0.06104

822 141 0.01085 0.07189

824 169 0.01301 0.08490

826 379 0.02917 0.11407

830 236 0.01817 0.13224

832 489 0.03764 0.16987

834 302 0.02325 0.19312

836 293 0.02255 0.21567

838 684 0.05265 0.26832

840 824 0.06342 0.33174

842 393 0.03025 0.36199

844 437 0.03364 0.39563

846 916 0.07050 0.46613

848 494 0.03802 0.50416

850 481 0.03702 0.54118

852 984 0.07574 0.61692

854 523 0.04026 0.65717

856 508 0.03910 0.69627

858 965 0.07428 0.77055

860 472 0.03633 0.80688

862 445 0.03425 0.84113

864 391 0.03010 0.87123

866 401 0.03087 0.90209

868 309 0.02378 0.92588

870 306 0.02355 0.94943

872 226 0.01740 0.96683

876 171 0.01316 0.97999

878 112 0.00862 0.98861

880 148 0.01139 1.00000

36

Table 2.3.3


Science Grade 11


1100 238 0.01933 0.01933

1108 151 0.01227 0.03160

1114 180 0.01462 0.04622

1118 186 0.01511 0.06133

1120 260 0.02112 0.08245

1122 279 0.02266 0.10512

1124 318 0.02583 0.13095

1126 310 0.02518 0.15613

1128 700 0.05686 0.21300

1132 694 0.05638 0.26937

1134 385 0.03128 0.30065

1136 737 0.05987 0.36052

1138 792 0.06434 0.42486

1140 1151 0.09350 0.51836

1142 411 0.03339 0.55175

1144 716 0.05816 0.60991

1146 714 0.05800 0.66791

1148 671 0.05451 0.72242

1150 644 0.05232 0.77474

1152 604 0.04907 0.82380

1154 538 0.04370 0.86751

1156 230 0.01868 0.88619

1158 442 0.03591 0.92210

1160 345 0.02803 0.95012

1162 144 0.01170 0.96182

1164 114 0.00926 0.97108

1166 103 0.00837 0.97945

1168 63 0.00512 0.98457

1170 54 0.00439 0.98895

1172 48 0.00390 0.99285

1176 41 0.00333 0.99618

1178 19 0.00154 0.99773

1180 28 0.00227 1.00000

37

Section 2.4

Rescore Analysis Results

38

Table 2.4.1

Rescore Analysis

Science Grade 5

Item Id Max Old Mean New Mean Old StDev New StDev Effect Size Discard

99979 4 1.58824 1.44608 1.19813 1.23258 -0.11865 False

248540

4 1.73039 1.93137 1.37925 1.41950 0.14572 False

191018A 4 1.77073 1.71220 1.24109 1.16741 -0.04717 False

191026A 4 2.21951 2.28780 1.30445 1.26805 0.05235 False

Table 2.4.2

Rescore Analysis

Science Grade 8


96417 4 1.66341 1.63415 1.11535 1.09267 -0.02624 False

258105

4 1.73171 1.75610 1.11198 1.09322 0.02193 False

166528A 4 1.81463 1.80488 1.25040 1.15935 -0.00780 False

191079A 4 2.29902 1.75980 0.95917 0.97058 -0.56217 True

Table 2.4.3

Rescore Analysis

Science Grade 11


228285

4 2.11220 2.29268 1.35838 1.31066 0.13287 False

191155A 4 1.50244 1.39512 1.38488 1.34127 -0.07749 False

471386 4 1.25490 1.16667 1.13768 1.07898 -0.07756 False

473603 4 1.68966 1.33498 1.13331 1.11963 -0.31296 False

39

Section 2.5

Tabled Delta Analysis Results

40

Table 2.5.1

Delta Analysis

Science Grade 5

Item Id Old P New P Old Delta New Delta Max Discard Std Dist

138266A 0.60000 0.63000 11.98661 11.67259 1 False 0.19463

138268A 0.57000 0.62000 12.29450 11.77808 1 False 0.80416

138269A 0.77000 0.71000 10.04461 10.78646 1 False 0.28239

153793 0.72000 0.66000 10.66863 11.35015 1 False 0.28105

165325A 0.52000 0.57000 12.79939 12.29450 1 False 0.59235

169225A 0.58000 0.62000 12.19243 11.77808 1 False 0.47872

191013A 0.46000 0.43000 13.40173 13.70550 1 False -0.12507

191015A 0.77000 0.74000 10.04461 10.42662 1 False -0.98678

191018A 0.48250 0.47500 13.17552 13.25083 4 False -1.00749

191026A 0.56500 0.50500 12.34537 12.94987 4 False 0.57765

191029A 0.71000 0.75000 10.78646 10.30204 1 False 1.20232

191032A 0.60000 0.58000 11.98661 12.19243 1 False -0.95009

191035A 0.84000 0.86000 9.02217 8.67872 1 False 1.30300

191043A 0.69000 0.65000 11.01660 11.45872 1 False -0.44537

191044A 0.83000 0.75000 9.18334 10.30204 1 False 1.31968

191049A 0.81000 0.80000 9.48841 9.63352 1 False -0.57811

191054A 0.83000 0.82000 9.18334 9.33854 1 False -0.51035

228142 0.60000 0.59000 11.98661 12.08982 1 False -1.27695

228155 0.74000 0.74000 10.42662 10.42662 1 False -0.38428

228161 0.90000 0.86000 7.87379 8.67872 1 False -0.23078

248506 0.85000 0.81000 8.85427 9.48841 1 False -0.50086

248527 0.66000 0.65000 11.35015 11.45872 1 False -1.08018

248540 0.44750 0.46250 13.52792 13.37655 4 False -0.90138

248547 0.49000 0.47000 13.10028 13.30108 1 False -0.59036

248564 0.95000 0.93000 6.42059 7.09684 1 False -1.17710

258586 0.69000 0.67000 11.01660 11.24035 1 False -1.21556

258645 0.68000 0.57000 11.12920 12.29450 1 False 2.14344

258652 0.48000 0.48000 13.20061 13.20061 1 False -1.26460

466935 0.49000 0.54000 13.10028 12.59827 1 False 0.48025

467356 0.54000 0.53000 12.59827 12.69892 1 False -1.11371

467394 0.63000 0.70000 11.67259 10.90240 1 False 1.90994

96271 0.68000 0.72000 11.12920 10.66863 1 False 1.00206

96579 0.87000 0.83000 8.49444 9.18334 1 False -0.42968

96581 0.79000 0.69000 9.77432 11.01660 1 False 1.95582

99979 0.35250 0.32500 14.51432 14.81505 4 False 0.24127

41

Table 2.5.2

Delta Analysis

Science Grade 8


138437A 0.84000 0.87000 9.02217 8.49444 1 False -0.65729

138464A 0.41000 0.35000 13.91018 14.54128 1 False -0.18842

153649 0.72000 0.73000 10.66863 10.54875 1 False -0.84402

153664 0.87000 0.85000 8.49444 8.85427 1 False 0.43366

153851 0.70000 0.74000 10.90240 10.42662 1 False -0.39709

158375 0.46000 0.06000 13.40173 19.21909 1 True 3.65224

164351A 0.68000 0.69000 11.12920 11.01660 1 False -0.65397

164619A 0.70000 0.75000 10.90240 10.30204 1 False -0.27567

165641A 0.65000 0.66000 11.45872 11.35015 1 False -0.51685

165644A 0.65000 0.66000 11.45872 11.35015 1 False -0.51685

165915A 0.46000 0.47000 13.40173 13.30108 1 False 0.30714

165948A 0.65000 0.66000 11.45872 11.35015 1 False -0.51685

166528A 0.44250 0.44750 13.57854 13.52792 4 False 0.33405

191060A 0.57000 0.55000 12.29450 12.49735 1 False -0.46262

191063A 0.47000 0.50000 13.30108 13.00000 1 False 0.45940

191064A 0.76000 0.69000 10.17479 11.01660 1 False 0.18414

191069A 0.54000 0.54000 12.59827 12.59827 1 False -0.13489

191076A 0.72000 0.74000 10.66863 10.42662 1 False -0.72499

191079A 0.58000 0.45500 12.19243 13.45215 4 False -0.27218

191084A 0.70000 0.72000 10.90240 10.66863 1 False -0.63297

191088A 0.67000 0.66000 11.24035 11.35015 1 False -0.82316

191095A 0.55000 0.56000 12.49735 12.39612 1 False -0.07942

191096A 0.47000 0.45000 13.30108 13.50265 1 False -0.03050

191101A 0.52000 0.51000 12.79939 12.89972 1 False -0.14659

191108A 0.74000 0.73000 10.42662 10.54875 1 False -0.62508

228096 0.76000 0.70000 10.17479 10.90240 1 False 0.07284

228110 0.66000 0.67000 11.35015 11.24035 1 False -0.56213

228125 0.83000 0.81000 9.18334 9.48841 1 False 0.08541

228171 0.78000 0.76000 9.91123 10.17479 1 False -0.26662

250949 0.52000 0.59000 12.79939 12.08982 1 False 0.64278

258068 0.55000 0.56000 12.49735 12.39612 1 False -0.07942

258081 0.66000 0.61000 11.35015 11.88272 1 False -0.62036

258090 0.70000 0.21000 10.90240 16.22568 1 True 4.24054

258105 0.45250 0.44000 13.47739 13.60388 4 False 0.11814

258114 0.71000 0.74000 10.78646 10.42662 1 False -0.55971

258131 0.93000 0.88000 7.09684 8.30005 1 False 1.85391

469859 0.62000 0.53000 11.77808 12.69892 1 False -0.42511

470244 0.71000 0.73000 10.78646 10.54875 1 False -0.67875

470447 0.68000 0.71000 11.12920 10.78646 1 False -0.42967

64657 0.85000 0.87000 8.85427 8.49444 1 False -0.42178

42


Delta Analysis

Science Grade 8


96417 0.39750 0.37500 14.03929 14.27456 4 False 0.25265

96619 0.70000 0.78000 10.90240 9.91123 1 False 0.10523

97786 0.66000 0.71000 11.35015 10.78646 1 False -0.11975

97788 0.55000 0.56000 12.49735 12.39612 1 False -0.07942

43

Table 2.5.3

Delta Analysis

Science Grade 11


138156A 0.64000 0.70000 11.56616 10.90240 1 False 0.24372

138226A 0.36000 0.36000 14.43384 14.43384 1 False -1.33509

138248A 0.39000 0.35000 14.11728 14.54128 1 False 0.86718

138295A 0.49000 0.51000 13.10028 12.89972 1 False -1.20279

138297A 0.39000 0.41000 14.11728 13.91018 1 False -0.65227

153427 0.54000 0.62000 12.59827 11.77808 1 False 1.52330

164363A 0.62000 0.63000 11.77808 11.67259 1 False -0.48746

164368A 0.50000 0.49000 13.00000 13.10028 1 False -0.12072

164375A 0.35000 0.37000 14.54128 14.32741 1 False -0.40328

164733A 0.26000 0.31000 15.57338 14.98340 1 False 1.93365

166387A 0.59000 0.60000 12.08982 11.98661 1 False -0.63558

166534A 0.57000 0.53000 12.29450 12.69892 1 False 1.70314

167542A 0.51000 0.55000 12.89972 12.49735 1 False -0.33379

167545A 0.63000 0.61000 11.67259 11.88272 1 False 1.08547

167546A 0.46000 0.45000 13.40173 13.50265 1 False -0.32269

167550A 0.51000 0.47000 12.89972 13.30108 1 False 1.37953

167605A 0.52000 0.52000 12.79939 12.79939 1 False -0.50096

191122A 0.58000 0.62000 12.19243 11.77808 1 False -0.63710

191126A 0.45000 0.44000 13.50265 13.60388 1 False -0.37264

191132A 0.56000 0.64000 12.39612 11.56616 1 False 1.46716

191149A 0.54000 0.61000 12.59827 11.88272 1 False 1.01964

191151A 0.48000 0.48000 13.20061 13.20061 1 False -0.70573

191154A 0.44000 0.46000 13.60388 13.40173 1 False -0.93812

191155A 0.31750 0.34750 14.89880 14.56832 4 False 0.34047

191160A 0.56000 0.57000 12.39612 12.29450 1 False -0.78425

191162A 0.48000 0.50000 13.20061 13.00000 1 False -1.15128

191164A 0.67000 0.69000 11.24035 11.01660 1 False -0.78221

191166A 0.49000 0.51000 13.10028 12.89972 1 False -1.20279

228234 0.50000 0.52000 13.00000 12.79939 1 False -1.25366

258206 0.30000 0.34000 15.09760 14.64985 1 False 1.00629

471029 0.56000 0.61000 12.39612 11.88272 1 False -0.05643

471090 0.57000 0.58000 12.29450 12.19243 1 False -0.73459

471386 0.30000 0.26000 15.09760 15.57338 4 False 0.61606

473557 0.66000 0.71000 11.35015 10.78646 1 False -0.34820

473597 0.68000 0.67000 11.12920 11.24035 1 False 0.88633

473603 0.39000 0.32500 14.11728 14.81505 4 False 2.18480

473639 0.39000 0.43000 14.11728 13.70550 1 False 0.33286

473794 0.74000 0.79000 10.42662 9.77432 1 False -0.39301

473798 0.70000 0.73000 10.90240 10.54875 1 False -1.23495

44

Section 2.6

Tabled B/B Analysis Results

45

Table 2.6.1

b/b Analysis

Science Grade 5

Item Id Old b New b Std Dist Flag

138266A 0.41617 0.04851 -1.02265 False

138268A 0.52954 -0.24675 0.35165 False

138269A -1.17400 -1.32244 -0.54955 False

153793 0.05465 -0.44622 -0.51920 False

165325A 1.20463 -0.63068 3.86028 True

169225A 0.34203 -0.30956 -0.04647 False

191013A 1.79502 1.74056 0.18320 False

191015A -0.32169 -0.51004 -0.56674 False

191018A 0.26590 0.17899 -0.13992 False

191026A -0.20428 -0.06566 0.56187 False

191029A -0.41964 -0.71010 -0.92773 False

191032A 0.37337 -0.07058 -0.75717 False

191035A -1.16635 -2.25495 1.64999 False

191043A -0.18467 -0.32154 -0.37256 False

191044A -0.70041 -1.04696 -0.93912 False

191049A -1.18363 -1.28938 -0.40567 False

191054A -1.21231 -1.38820 -0.64826 False

228142 0.22213 -0.00202 -0.61287 False

228155 -0.92031 -1.82182 0.97933 False

228161 -3.03210 -3.24859 -1.03955 False

248506 -1.19379 -1.26047 -0.27418 False

248527 -0.02363 0.02633 0.28540 False

248540 0.75151 0.20144 -0.44878 False

248547 1.18876 0.87171 -0.79441 False

248564 -2.16762 -2.02960 0.28668 False

258586 -0.34946 -0.72409 -0.89242 False

258645 -0.01463 0.24381 0.99586 False

258652 0.67869 0.51399 -0.34712 False

466935 1.14063 0.14940 0.99781 False

467356 0.86939 0.44275 -0.88506 False

467394 -0.10707 -1.14817 1.34104 False

96271 0.10778 -0.19033 -0.88037 False

96579 -1.52919 -1.39734 0.35452 False

96581 -1.26635 -0.95929 0.98711 False

99979 1.40607 1.38276 0.23506 False

46

Table 2.6.2

b/b Analysis

Science Grade 8


138437A -1.49529 -1.97464 -0.57544 False

138464A 0.95763 1.03696 -0.16443 False

153649 -1.40758 -1.19905 0.10740 False

153664 -1.42517 -1.57213 -0.26068 False

153851 -0.41665 -0.91079 -0.30774 False

158375 1.17871 1.59204 -0.39823 False

164351A -0.21076 -0.46048 -0.45468 False

164619A -0.15557 -0.57185 -0.24748 False

165641A 0.00087 -0.20735 -0.38288 False

165644A -0.45965 -0.50295 -0.67931 False

165915A 1.34876 0.62665 0.90131 False

165948A 0.01252 -0.19925 -0.37272 False

166528A 0.45263 0.21246 -0.10152 False

191060A 0.41607 0.27270 -0.22439 False

191063A 0.57714 0.28686 0.01991 False

191064A -1.12335 -0.89309 -0.02517 False

191069A 0.48755 0.14635 0.02495 False

191076A -0.88048 -1.11507 -0.65209 False

191079A -0.14559 0.27703 -0.35626 False

191084A -0.66362 -0.75705 -0.62086 False

191088A -0.51889 -0.35332 -0.42494 False

191095A 0.39453 0.21473 -0.19748 False

191096A 0.61519 0.56983 -0.21948 False

191101A 0.81151 0.30685 0.37604 False

191108A -1.67495 -1.12296 0.61876 False

228096 -1.07501 -0.81104 -0.01583 False

228110 -0.04683 -0.35305 -0.30487 False

228125 -1.43614 -1.53241 -0.20081 False

228171 -0.55094 -0.81353 -0.62731 False

250949 0.80896 0.16741 0.52009 False

258068 0.58023 0.33306 -0.02420 False

258081 0.00827 0.03630 -0.62984 False

258090 -0.88372 4.97457 5.82344 True

258105 0.58140 0.36966 -0.06121 False

258114 -1.40030 -2.40150 -0.30768 False

258131 -2.71370 -1.88745 1.47903 False

469859 -0.03247 0.42996 -0.37591 False

470244 -0.42044 -0.63801 -0.60367 False

470447 -0.10393 -0.34839 -0.40176 False

64657 -2.15468 -1.84174 0.62749 False

47


b/b Analysis

Science Grade 8


96417 0.75288 0.72896 -0.16686 False

96619 -0.23834 -1.21361 0.30112 False

97786 -0.38713 -0.84279 -0.33246 False

97788 0.64018 0.47770 -0.08136 False

48

Table 2.6.3

b/b Analysis

Science Grade 11


138156A -0.05019 -0.43474 -0.61281 False

138226A 1.72614 1.37668 0.31239 False

138248A 1.38753 1.21948 -0.67359 False

138295A 0.74162 0.53435 -0.89612 False

138297A 1.39884 1.15213 -0.32817 False

153427 0.23500 0.16777 -0.42332 False

164363A -0.04466 -0.32548 -1.05594 False

164368A 1.50802 0.63925 2.41546 False

164375A 1.28623 1.31871 -0.63106 False

164733A 1.78164 1.64467 -0.56859 False

166387A 0.11389 -0.79892 1.76034 False

166534A 0.21793 0.47765 0.99429 False

167542A 0.69688 0.56183 -0.99507 False

167545A -0.02006 -0.14251 -0.50646 False

167546A 0.76814 0.69909 -0.75417 False

167550A 0.73316 0.72489 -0.47137 False

167605A 0.57424 0.47023 -0.78717 False

191122A -0.29706 -0.30500 0.15424 False

191126A 1.52378 0.88671 1.42772 False

191132A -0.48914 -1.16440 0.37252 False

191149A 0.15523 -0.00502 -0.77537 False

191151A 0.85084 0.62499 -0.74998 False

191154A 0.61154 0.51492 -0.77796 False

191155A 0.94767 0.70623 -0.62421 False

191160A 0.43021 0.23375 -1.09783 False

191162A 0.85296 0.48644 -0.14322 False

191164A -0.16410 -0.63830 -0.29596 False

191166A 0.69529 0.39938 -0.54267 False

228234 0.62915 0.15026 0.20484 False

228332 0.13320 0.38378 1.00628 False

248420 0.15202 0.52817 1.53536 False

258181 0.09063 0.96974 3.73740 True

258187 -0.69150 -0.64590 0.62367 False

258206 1.42778 1.60937 -0.07502 False

471029 -0.35972 -0.39140 0.09002 False

471090 0.34074 -0.16754 0.15660 False

471386 1.13468 1.28548 -0.02997 False

473557 -0.17953 -0.65252 -0.31051 False

473597 -0.22410 -0.61299 -0.69950 False

473603 0.59930 0.88043 0.85538 False

49


b/b Analysis

Science Grade 11


473639 1.09824 0.84801 -0.49515 False

473794 -0.64302 -1.28464 0.13449 False

473798 -0.51120 -0.99619 -0.45981 False

50

Section 2.7

Final Item Parameters

51

Table 2.7.1

IRT Parameters for Dichotomous Items

Science Grade 5

Item ID

Parameters and Measures of Standard Error a SE(a) b SE(b) c SE(c)

191013A 0.60575 0.05508 1.97402 0.06763 0.31269 0.01357

191035A 0.52739 0.01614 -2.17987 0.06131 0.00000 0.00000

138266A 0.79924 0.03445 0.21490 0.05168 0.26908 0.01843

228161 0.34347 0.01482 -3.21290 0.13478 0.00000 0.00000

138268A 0.45376 0.02706 -0.09207 0.14493 0.17420 0.04024

191015A 0.95133 0.03483 -0.36579 0.04925 0.26272 0.02130

466935 0.36676 0.02432 0.31979 0.15925 0.12159 0.03906

467394 0.47431 0.01275 -1.02922 0.03532 0.00000 0.00000

96271 0.56109 0.03642 -0.03341 0.13305 0.38159 0.03301

248527 1.17326 0.04245 0.19184 0.03042 0.29907 0.01285

258652 0.44776 0.02702 0.69883 0.09458 0.11620 0.02736

228155 0.34321 0.01210 -1.72957 0.06737 0.00000 0.00000

248564 1.01219 0.03425 -1.94559 0.06819 0.11610 0.04321

165325A 0.27157 0.01065 -0.49121 0.04546 0.00000 0.00000

191032A 0.71603 0.02743 0.09109 0.05088 0.13639 0.01965

191029A 0.72829 0.03040 -0.57378 0.08149 0.23698 0.03143

258645 0.84667 0.03432 0.41794 0.04024 0.22717 0.01507

248547 0.71210 0.03857 1.07073 0.04467 0.24042 0.01410

96581 0.56536 0.01354 -0.83285 0.02736 0.00000 0.00000

258586 0.43302 0.02200 -0.58833 0.15193 0.12925 0.04387

138269A 0.37515 0.01516 -1.21040 0.12912 0.07739 0.03468

169225A 0.67218 0.02457 -0.15736 0.05711 0.10209 0.02228

467356 0.42386 0.03080 0.62477 0.13301 0.18373 0.03438

248506 0.85072 0.02524 -1.14597 0.05397 0.08578 0.02763

228142 0.66792 0.02934 0.16237 0.06243 0.18267 0.02211

153793 0.75246 0.02669 -0.29944 0.05459 0.13185 0.02276

191054A 0.74569 0.02392 -1.27876 0.07148 0.10010 0.03431

191049A 0.74452 0.02204 -1.17603 0.05906 0.07386 0.02755

258695 0.53365 0.04912 2.16155 0.07412 0.22235 0.01478

96579 0.84208 0.02197 -1.28826 0.04200 0.04707 0.01961

191043A 0.57275 0.02824 -0.16982 0.09900 0.19444 0.03217

191044A 0.69586 0.01943 -0.92400 0.04963 0.05225 0.02086

52

Table 2.7.2

IRT Parameters for Polytomous Items

Science Grade 5

Item ID

Parameters and Measures of Standard Error a SE(a) b SE(b) d0 SE(d0) d1 SE(d1) d2 SE(d2) d3 SE(d3) d4 SE(d4)

191018A 0.67921 0.00604 0.35055 0.01369 1.85153 0.02141 0.69737 0.01708 -0.50702 0.01733 -2.04187 0.02545 0.00000 0.00000

191026A 0.61846 0.00567 0.09620 0.01516 2.02403 0.02537 0.75411 0.01911 -1.05951 0.01946 -1.71864 0.02232 0.00000 0.00000

248540 0.79082 0.00760 0.37389 0.01212 1.29546 0.01687 0.82740 0.01543 -0.63880 0.01579 -1.48407 0.01974 0.00000 0.00000

99979 0.49463 0.00452 1.60204 0.01904 2.74693 0.02445 0.75602 0.02254 -0.77257 0.02895 -2.73038 0.05343 0.00000 0.00000

53

Table 2.7.3


Science Grade 8

Item ID


258114 0.20410 0.01389 -2.34017 0.41097 0.13713 0.06144

138437A 0.58261 0.02473 -1.88880 0.15801 0.18714 0.06313

191084A 0.71154 0.02705 -0.60130 0.07097 0.16492 0.02832

470447 0.69254 0.03420 -0.16917 0.08338 0.33207 0.02591

97786 0.53820 0.02460 -0.69196 0.11634 0.15469 0.03881

165644A 0.58699 0.02565 -0.33261 0.08648 0.14949 0.02986

97788 0.50501 0.03505 0.70435 0.09871 0.26234 0.02622

164619A 0.74738 0.03364 -0.40546 0.07866 0.31948 0.02690

153649 0.47616 0.01883 -1.06867 0.11484 0.09550 0.03732

165641A 1.07571 0.03623 -0.02003 0.03246 0.23106 0.01444

191063A 0.73227 0.02962 0.50255 0.04087 0.14487 0.01512

258090 0.10086 0.02315 5.45942 1.30022 0.28615 0.06920

158375 0.02948 0.00671 1.88267 9.69142 0.69270 0.07130

191069A 0.93115 0.03245 0.35398 0.03084 0.16656 0.01266

191088A 0.43394 0.02977 -0.17438 0.18070 0.24110 0.04465

165948A 0.62964 0.03204 -0.01147 0.08550 0.27549 0.02640

228171 0.88455 0.03039 -0.66102 0.05333 0.18720 0.02418

153664 0.88399 0.02329 -1.46318 0.04203 0.04666 0.01930

96619 0.68594 0.02277 -1.08407 0.07230 0.09725 0.03094

228125 0.61225 0.01899 -1.42117 0.07352 0.07018 0.02920

191076A 0.60883 0.01915 -0.97987 0.06641 0.06621 0.02555

153851 0.72776 0.02454 -0.76386 0.06258 0.10952 0.02674

164351A 1.15164 0.03403 -0.28770 0.02873 0.15941 0.01445

64657 0.74877 0.02133 -1.74827 0.05731 0.05701 0.02488

228110 0.70405 0.02998 -0.17410 0.06767 0.22302 0.02423

228096 0.58814 0.02281 -0.65839 0.08491 0.11060 0.03111

258081 0.93308 0.03575 0.23761 0.03774 0.25176 0.01472

470244 0.88335 0.03109 -0.47542 0.05079 0.20621 0.02208

258068 0.66997 0.03419 0.55141 0.05837 0.24939 0.01864

191060A 0.54083 0.03072 0.48758 0.08224 0.19734 0.02465

191101A 0.47988 0.02730 0.52369 0.08833 0.13123 0.02624

258131 0.73829 0.02325 -1.79660 0.07549 0.08954 0.03601

250949 0.73006 0.03363 0.37625 0.05339 0.24937 0.01808

469859 0.76756 0.03537 0.65387 0.04328 0.23463 0.01487

138464A 0.81408 0.03825 1.29572 0.03093 0.14948 0.00957

165915A 0.38744 0.02773 0.86185 0.11836 0.12200 0.03092

191064A 0.55467 0.01948 -0.74515 0.07709 0.07535 0.02750

191108A 0.59124 0.01785 -0.98822 0.06141 0.05511 0.02268

191095A 0.99686 0.03689 0.42628 0.03075 0.22598 0.01228

54



Science Grade 8

Item ID


191096A 0.89557 0.03583 0.80177 0.02957 0.17811 0.01093

55

Table 2.7.4


Science Grade 8

Item ID


166528A 0.95785 0.00875 0.42388 0.01006 1.50530 0.01584 0.50806 0.01292 -0.42126 0.01347 -1.59209 0.01962 0.00000 0.00000

191079A 0.61851 0.00545 0.49216 0.01520 2.19341 0.02395 0.84573 0.01865 -0.60581 0.01951 -2.43335 0.03237 0.00000 0.00000

258105 0.64975 0.00573 0.59011 0.01473 2.23143 0.02298 1.04424 0.01815 -0.97140 0.02057 -2.30427 0.03175 0.00000 0.00000

96417 0.80532 0.00731 0.97004 0.01200 2.00812 0.01735 0.77016 0.01467 -0.52195 0.01762 -2.25633 0.03753 0.00000 0.00000

56

Table 2.7.5


Science Grade 11

Item ID


473794 0.58501 0.02956 -1.04739 0.15523 0.20190 0.05873

191132A 0.32226 0.01276 -0.93577 0.05184 0.00000 0.00000

167550A 1.27797 0.05444 0.81819 0.02314 0.25636 0.00924

164375A 0.90789 0.05356 1.36948 0.03408 0.22165 0.01013

167546A 0.68955 0.03661 0.79424 0.04743 0.15182 0.01777

164368A 0.34064 0.02877 0.73869 0.17981 0.12101 0.04272

258206 0.85505 0.05830 1.63932 0.04148 0.21766 0.00983

166387A 0.35431 0.01281 -0.59647 0.03931 0.00000 0.00000

473557 0.89233 0.03229 -0.46055 0.05333 0.14688 0.02647

138156A 1.16980 0.03904 -0.25837 0.03384 0.18767 0.01829

191154A 0.85847 0.03606 0.62326 0.03333 0.13849 0.01387

153427 1.08624 0.04592 0.30098 0.03554 0.30085 0.01480

191122A 0.67454 0.02980 -0.13792 0.07202 0.13216 0.02882

191166A 0.56906 0.03386 0.51600 0.07961 0.15214 0.02703

473798 0.64723 0.02615 -0.77960 0.09243 0.12002 0.03922

167542A 1.11850 0.05195 0.66681 0.03093 0.31667 0.01181

138248A 1.26124 0.06190 1.27736 0.02375 0.21348 0.00729

164733A 0.99673 0.06383 1.67209 0.03717 0.20655 0.00793

228234 0.46763 0.02544 0.28472 0.09703 0.08774 0.03031

191162A 0.77616 0.03737 0.59682 0.04410 0.17999 0.01717

166534A 0.82408 0.04136 0.58866 0.04502 0.24396 0.01686

191160A 1.01923 0.04217 0.36223 0.03479 0.24514 0.01478

473597 0.75491 0.02727 -0.42385 0.05852 0.09683 0.02672

164363A 1.09850 0.03242 -0.15694 0.02772 0.08826 0.01481

191164A 0.96191 0.02870 -0.44735 0.03663 0.07417 0.01937

471090 0.72917 0.02845 -0.01031 0.05233 0.09654 0.02224

138297A 0.77474 0.04667 1.21483 0.03953 0.21190 0.01325

138295A 0.89585 0.04208 0.64130 0.03735 0.23035 0.01457

471029 0.77296 0.02444 -0.21814 0.04102 0.05655 0.01843

167545A 1.03147 0.03592 0.01293 0.03393 0.16018 0.01661

191126A 0.55090 0.03771 0.96842 0.07031 0.15863 0.02353

473639 1.15708 0.05126 0.93250 0.02448 0.22565 0.00934

167605A 1.00283 0.04325 0.58178 0.03205 0.23175 0.01314

138226A 0.57679 0.04178 1.42330 0.05393 0.14620 0.01781

191149A 0.83772 0.03652 0.14057 0.05035 0.21023 0.02075

191151A 0.99033 0.04344 0.72545 0.03003 0.21072 0.01210

57

Table 2.7.6


Science Grade 11

Item ID


191155A 1.10606 0.01091 0.80087 0.00925 1.24311 0.01232 0.43995 0.01154 -0.36011 0.01345 -1.32296 0.02123 0.00000 0.00000

471386 0.93825 0.00959 1.33863 0.01119 1.57519 0.01349 0.44403 0.01405 -0.51618 0.01929 -1.50304 0.03340 0.00000 0.00000

473603 0.99563 0.00986 0.96259 0.01027 1.38069 0.01320 0.58453 0.01253 -0.46056 0.01570 -1.50466 0.02651 0.00000 0.00000

58

Section 2.8

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