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Central Tendency

3. Exercise 3 used ISSP date on the number of hours worked per week for a sample

a. Calculate the mean for worked hours worked per week.

b.Compare the value of the mean with those you have already calculated for the
median. Without constructing a histogram, describe whether and how the
distribution of hours worked per week skewed.

The following data frequency distribution contains info on the # of hrs worked per week for a sample of 75 Japanese adults.

Hours worked per week Frequency Percent Cumulative Percent
7 1 1.3 1.3
12 1 1.3 2.6
15 2 2.7 5.3
20 3 4.0 9.3
24 1 1.3 10.6
30 7 9.3 19.9
32 1 1.3 21.2
35 2 2.7 23.9
36 2 2.7 26.6
38 2 2.7 29.3
40 13 17.3 46.6
41 1 1.3 47.9
42 2 2.7 50.6
43 1 1.3 51.9
45 7 9.3 61.2
48 2 2.7 63.9
50 14 18.7 82.6
54 2 2.7 85.3
55 1 1.3 86.6
60 6 8.0 94.6
65 1 1.3 95.9
66 1 1.3 97.2
68 1 1.3 98.5
72 1 1.5 100.00

total 75 100.

Solution Preview

3. Exercise 3 used ISSP date on the number of hours worked per week for a sample of 75 Japanese adults
a. Calculate the mean for worked hours worked per week.

To find the mean, ...

\$2.19