Homework 7
STAT 100 – Fall 2015
Name(s):
1. In 1973, the University of California at Berkeley was accused of having discriminated against women in
their admissions process to graduate programs. Data on the number of acceptances and rejections for both
male and female applicants can be found in the file UCBerkeley.xls (this has been posted on the course
website). The question you will investigate in this homework is whether the decision to admit or to reject
was influenced by the sex of the applicant (specifically, you will investigate whether women were denied
admittance to graduate programs more often than men).
a. Construct the following pivot table in Excel. Then, fill in the appropriate counts in the table below.
Admitted
Rejected
Grand Total
Female
Male
Grand Total
b. As stated above, we want to know whether females were less likely than males to be admitted to
graduate school programs at this university (back in 1973). Compute the appropriate row percentages
for investigating this question. Type these percentages into the table below.
% Admitted
% Rejected
Female
Male
c. Construct a 100% stacked column chart to display the data shown in the table from part b. Copy and
paste this chart below.
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Homework 7
STAT 100 – Fall 2015
d. Based on your analysis so far, does it appear that women may have been discriminated against in the
graduate admissions process at the University of California – Berkeley in 1973? Explain why or why
not.
e. Construct the following pivot table in Excel. Then, fill in the appropriate row percentages in the table
below.
% Female
% Male
Business
Communications
Engineering
Literature
Medicine
Psychology
f.
Based on the information summarized in the above table (part e), which graduate programs tended to
have more female than male applicants?
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Homework 7
STAT 100 – Fall 2015
g. Construct the following pivot table in Excel. Then, fill in the appropriate row percentages in the table
below.
% Admitted
% Rejected
Business
Communications
Engineering
Literature
Medicine
Psychology
h. Based on the information summarized in the above table (part g), which graduate programs tended to
have lower acceptance rates, regardless of sex?
i.
Next, let’s consider all three variables in the same analysis (Gender, Whether they were admitted or
rejected, and Department). To do this, add “Department” to the “Filter” field of the pivot field list and
construct the following pivot tables in Excel for each department. Fill in the appropriate row
percentages in the tables below.
Business Department
% Admitted
% Rejected
Female
Male
Communications Department
% Admitted
% Rejected
Female
Male
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Homework 7
STAT 100 – Fall 2015
Engineering Department
% Admitted
% Rejected
Female
Male
Literature Department
% Admitted
% Rejected
Female
Male
Medicine Department
% Admitted
% Rejected
Female
Male
Psychology Department
% Admitted
% Rejected
Female
Male
j.
Based on the tables constructed in part i, do you now believe that women were discriminated against in
the graduate admissions process at the University of California – Berkeley in 1973? Explain why or
why not.
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Homework 7
STAT 100 – Fall 2015
2. In July/August of 2015, CBS News polled a random sample of 1,252 adults nationwide. They were asked
the following question: “Do you feel that the distribution of money and wealth in this country is fair, or do
you feel that the money and wealth in this country should be more evenly distributed among more
people?” The table below summarizes the responses to this question by political affiliation.
Republicans
Democrats
Independents
Fair
166
47
150
Should be more
even
136
371
301
Unsure/No
answer
23
8
50
a. In Excel, enter the data in the appropriate format (see the top of page 17 in Handout 7). You do not
need to copy and paste the data below; I will know you did this correctly if you are able to do part b.
b. Construct a 100% stacked bar chart in Excel that will allow you to make comparisons of the response
categories across political affiliation (in other words, political affiliation should appear on the x-axis of
your chart). Copy and paste this chart below.
c. Write a sentence or two summarizing the differences in opinions across political affiliation.
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