Consider again the pew research center results on age and, Ask an Expert

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Consider again the Pew Research Center results on age and political party in given Exercise.

a) What is the marginal distribution of party affiliation?

b) Create segmented bar graphs displaying the conditional distribution of party affiliation for each age group.

c) Summarize these poll results in a few sentences that might appear in a newspaper article about party affiliation in the United States.

d) Do you think party affiliation is independent of the voter's age? Explain.

Exercise:
Age and party 2007. The Pew Research Center conducts surveys regularly asking respondents which political party they identify with. Among their results is the following table relating preferred political party and age. (http://people-press.org/reports/)

869_Table 1.jpg

a) What percent of people surveyed were Republicans?

b) Do you think this might be a reasonable estimate of the percentage of all voters who are Republicans? Explain.

c) What percent of people surveyed were under 30 or over 65?

d) What percent of people were classified as "Other" and under the age of 30?

e) What percent of the people classified as "Other" were under 30?

f) What percent of people under 30 were classified as "Other"?

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