Answers:

Q1a. 10 elements.b. 5 variables.c. 10.d. Worth and Age are quantitative. Ranking, Marital Status, and Source are categorical.e. Ranking: ordinal

Worth: ratioAge: ratioMarital Status: nominalSource: nominal

Q4

a. Mean:36.56.Median: 35.00Range: 20Variance: 20.03Standard deviation : 4.47Skewed to the right ( agap between 48 and 50)

b.

Minimum: 32

Q1: 33

Median: 35

Q3: 39

Maximum: 52

Q4 c.IQR=Q3-Q1=6Lf= 24Uf= 48

(Skewed to the right).

30 35 40 45 50 55 60

BoxPlot

Time

3. Problem 2.75 page 76.

a.

a.

c. Skewed to the left (negative skewed).

2. Problem 2.8 page 40.

a. Sports League Frequency Relative

Frequency Frequency PercentMLB 11 0.22 22%MLS 3 0.06 6%NBA 7 0.14 14 %NFL 24 0.48 48% NHL 5 0.10 10% ________________________________________ Total 50 

b.

16

18

20

22

24

26

28

30

32

34

0

10

20

30

Histogram

Model Age

Per

cent

Frequency Distribution - Quantitative

Model Age cumulative

lower

upper

midpoint

width

frequency percent

frequency

percent

16 < 18 17 2 2 4.0 2 4.018 < 20 19 2 2 4.0 4 8.020 < 22 21 2 3 6.0 7 14.022 < 24 23 2 3 6.0 10 20.024 < 26 25 2 6 12.0 16 32.026 < 28 27 2 12 24.0 28 56.028 < 30 29 2 14 28.0 42 84.030 < 32 31 2 6 12.0 48 96.032 < 34 33 2 2 4.0 50 100.0

50 100.0

c.

6% 7%8%9%

10%10%11%

12%

13%14%

Chart TitleFrequency Distribution - Quantitative

d.

most popular: NFL 24 least popular: MLS 3