Sociology 3211q
Test #1
Sept 27, 2013
Name:
Instructions: Answer all questions in the space provided, or go
to the back or use a blank sheet of paper if necessary. The
number of points is given in parentheses after each question;
there are 60 points total. Show your work; for questions that
don't involve calculations, explain the reasoning behind your
answer. If you're not sure how to interpret a question, ask me.
The following numbers are the salaries of the employees of a
company. (Figures are in thousands of dollars. Give your
answers in the same units: for example, 50 not 50,000).
40, 44, 47, 52, 55, 60, 61, 65, 65, 70, 77, 86, 110
1.
(4) What is the median salary?
2.
(4) What is the interquartile range?
3.
(4) What is the mean salary?
4.
(6) What is the standard deviation?
1
5. (4) What percentage of the employees are within one standard
deviation of the mean salary?
6. (4) Nine of the employees are men and four are women. The
average salary of the women is 71. What is the average salary of
the men?
7. (6) Suppose that everyone gets a raise of $2,000, so the new
salaries are 42, 46, 49, etc.
a) What is the new mean?
b) What is the new median?
c) What is the new interquartile range?
2
JOBACTIV PHYSICAL ACTIVITY AT WORK
Frequency
Percent
Valid Percent
Cumulative
Percent
1 Sitting or standing
1336
31.6
67.2
67.2
2 Walking
409
9.7
20.6
*****
3 Heavy labor
244
***
12.3
100.0
1989
47.0
100.0
7
27
.6
9
14
.3
System
2202
52.0
Total
2243
53.0
4232
100.0
Valid
Total
Missing
Total
8.
(4) Use the frequency table to calculate the mean value of
physical activity at work.
9.
(8) Use the frequency table to calculate the standard
deviation of physical activity at work.
10.
(4) I have removed two of the entries and replaced them by
****.
a.
What is the cumulative percent for jobactiv=2
(Walking)?
b.
What is the percent for jobactiv=3 (Heavy labor)?
3
Report
HTIN3 COMPUTED HEIGHT IN INCHES
EDUCA EDUCATION
Mean
N
Std. Deviation
LEVEL
1 None
65.50
2
4.950
2 Elementary
65.09
113
4.144
3 Attend HS
65.79
238
4.068
4 HS Graduate
66.10
1248
4.100
5 Some College
66.51
1078
4.082
6 College Graduate
67.13
1504
3.935
Total
66.53
4183
4.068
11. (6) Here is a table of height in inches by educational
level. According to the table, what is the relationship (if any)
between the variables?
12. (6) For each of the following variables, say whether it is
nominal, ordinal or interval/ratio.
a. Physical activity at work
b. Age in years
c. Marital status (1=married, 2=divorced, 3=widowed,
4=separated, 5=never married, 6=member of unmarried
couple).
4