Download - Answers of Statics
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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)
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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.
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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.
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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.
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6% 7%8%9%
10%10%11%
12%
13%14%
Chart TitleFrequency Distribution - Quantitative
d.
most popular: NFL 24 least popular: MLS 3