Question

The data represent the age of world leaders of their day of inauguration. Find the five-number summary, and construct a boxplot for the data. Comment on the shape of the distribution.

68, 43, 48, 61, 65, 65, 62, 53, 54, 52, 69,57, 44, 67, 67

Choose the correct description of the shape of the distribution.

A.) The distribution is skewed to the right.

B.) The distribution is roughly symmetric.

C.) The distribution is skewed to the left.

D.) The shape of the distribution cannot be determined from the boxplot.

Answer #1

Option c . The distribution is skewed to left

The data represent the age of world leaders on their day of
inauguration. Find the five-number summary, and construct a
boxplot for the data. Comment on the shape of the distribution.
47 58 55 50
63 49 61 46
56 55 48 62
52 64 48

Create a frequency distribution using age and male-yes. It's
supposed to be a bar chart.
Age
55
50
42
47
58
67
64
64
62
43
51
58
42
51
66
69
57
48
51
50
43
46
49
48
55
51
50
41
47
55
54
52
64
68
51
40
53
67
65
47
48
56
64
45
57
50
52
60
66
70
63
63
63
32
70
66
50
67
63
59
63
34
70
50...

Age of CEO
57
49
57
63
58
56
67
62
61
61
53
58
52
58
56
66
56
59
52
63
52
59
57
64
53
54
65
46
58
58
57
50
62
57
58
52
48
59
54
62
66
46
52
63
57
52
61
50
55
55
64
48
56
58
55
60
51
62
62
50
45
50
52
55
58
57
52
53
61
55
63
54
52
59
50
56
57...

2a. Describe the sample and population you are studying.
I am studying customers' satisfaction level with their
car insurance plan.
2b. Calculate the sample mean and sample standard deviation for
your variable. Keep at least four decimal places.
2c. Calculate the standard error and the margin of error for a 90%
confidence interval. Keep at least four decimal places.
Data:
36
18
66
43
28
39
47
40
24
46
48
57
36
58
39
62
43
65
74
36...

The food services division of Cedar River Amusement Park Inc. is
studying the amount spend per day on food and drink by families who
visit the amusement park. A sample of 40 families who visited the
park yesterday revealed they spent the following amounts, in
dollars:
77
18
63
84
38
54
50
59
54
56
36
26
50
34
44
41
58
58
53
51
62
43
52
53
63
62
62
65
61
52
60
60
45
66...

Refer to the Body Measurements Female Data Set and Body
Measurements Male Data Set found in StatDisk (Elementary Stats 12th
Edition, sets #1a and 1b) and use columns 5 for HDL. Use a .05
significance level to test the claim that men and women have the
same mean HDL level (High-Density Lipoprotein) female 74 56 70 40
67 96 43 80 77 41 23 76 39 52 38 37 57 81 37 50 73 61 33 41 60 62
67...

Refer to the accompanying data set and construct a 95%
confidence interval estimate of the mean pulse rate of adult
females; then do the same for adult males. Compare the results.
Males Females
81
82
72
94
52
57
59
66
51
54
62
80
52
77
74
85
51
89
62
57
73
35
61
64
62
87
80
74
80
79
63
62
63
67
97
76
43
60
85
65
72
86
66
85
73
69
72 ...

Basline SF-36 Well-Being Score
Standard
65
vegetarian
71
58
62
80
58
56
62
96
28
55
13
79
74
62
79
68
44
36
15
52
82
48
44
74
30
23
80
12
55
56
63
61
92
63
35
64
9
62
28
43
35
42
65
64
48
7
48
31
57
45
43
11
22
68
75
85
28
24
43
22
46
21
49
53
42
78
46
10
21
67
40
For this...

The following scores represent a sample of final examination
grades for a statistics course
23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92
85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41
71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79
a) Compute the 20th percentile of...

The following scores represent a sample of final examination
grades for a statistics course
23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92
85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41
71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79
a) Provide a frequency polygon with...

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