Download 142hw_3

Homework due on April 7, 2010
1. Make a a) stem-and-leaf plot, b) frequency distribution with relative frequency
and c) histogram of the following data points:
26
39
61
59
16
62
28
19
2.
21
25
32
20
34
25
33
23
45
38
18
24
41
29
23
38
31
27
22
28
46
48
20
30
27
56
34
22
60
62
30
24
49
Find mean, median, and mode from both grouped and ungrouped distribution
from question 1.
3. The data below shows the world’s top six countries as tourist destination in 2000.
Construct a pie chart to represent the data.
Country
Number of arrivals (million)
France
75.5
Spain
50.9
United Sates
48.2
Italy
41.2
China
31.2
United Kingdom
25.2
Source: World Tourism Organization
4. The frequency distribution of the results of a quiz given by in Professor X’s
statistical class. Find the mean, median and mode of the scores.
Score
Number of students
10
3
9
10
8
9
7
8
6
10
5
2
5. Find variance and standard deviation of each data sets and interval for one
standard deviation of mean, two standard deviation of mean, three standard
deviation of mean.
a) 2
b) 102
c) 600
4
104
800
6
106
1000
8
108
1200
10
110
1400
12
112
1600
14
114
1800
16
116
2000
6. An independent consumer group tested radial tires from a major brand to
determine expected tread life. The data (in thousands of miles) are given below
50
56
53
54
51
43
52
51
56
47
48
58
42
56
61
Determine all three quartiles and interquartile range
7. An independent consumer group tested radial tires from a major brand to
determine expected tread life. The data (in thousands of miles) are given below
50
56
53
64
54
51
43
52
51
56
47
48
58
42
56
61
Determine all three quartiles and interquartile range
8. An independent consumer group tested radial tires from a major brand to
determine expected tread life. The data (in thousands of miles) are given below
50
56
53
64
54
51
43
66
52
51
56
47
48
58
42
56
61
Determine all three quartiles and interquartile range
9. An independent consumer group tested radial tires from a major brand to
determine expected tread life. The data (in thousands of miles) are given below
50
56
53
64
54
51
43
66
52
51
56
59
47
48
58
42
56
61
Determine all three quartiles and interquartile range
10. Make box plots for data set in question 6 – 9. Detect outlier(s) if any.
GOOD LUCK