A random sample of 748 voters in a large city were asked how they voted in the presidential election of 2008. Calculate chi square and the column percentages for each table below and then write a brief report describing the significance of the relationships as well as the patterns you observe.

a. Presidential preference and gender:

b. Presidential preference and race/ethnicity:

c. Presidential preference by education:

d. Presidential preference by religion:

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Gender Totals Male Preference McCain Obama Female 173 210 165 200 338 410 Totals 383 748 365