Math 138: Statistics, Fall 2009
Name: Key
Turn-in Homework #2
Using the Homework.xls spreadsheet available on the course WISE site under resources,
answer the following questions. This spreadsheet contains data from the 2008 General
Social Survey on the number of hours of television watched on an average day.
1. What is the minimum response? 0 hours
2. What is the maximum response? 24 hours
What is the mean response? 2.96322 hours
3.
4. What is the median response? 2 hours
5. What is the standard deviation in responses? 2.30861 hours
6. Using bins of width 2hrs, create the frequency table and histogram for this data.
More
Hours of TV on an Average Day
15000
10000
Frequency
5000
25
21
17
13
9
5
0
1
1
3
5
7
9
11
13
15
17
19
21
23
25
Frequency
7689
14131
6222
1650
698
340
223
84
28
15
34
4
13
0
Frequency
bins
bin midpoints
7. Describe the shape of the distribution. Unimodal and skewed to the right
8. Go to the General Social Survey link from the course website and follow the
Browse GSS Variables (by Subject) link. Find a quantitative and a categorical
variable that you would be interested in analyzing. For example, I went to ‘T’,
and then ‘Television Viewing’ and then ‘Hours of TV per day’ then ‘Hours per
day watching TV’ and found the quantitative variable TVHOURS which reports
this information. Your answer should be formatted something like this:
a. Type: Quantitative
b. Description: Number of hours of TV watched on an average day
c. Variable name: TVHOURS