Practice Quiz

Child Psych

Category - Research & Stats

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A study collects information from 50 people about their ethnicity, where options are Caucasian, Hispanic, Native American, Asian, and African; and their religious views, where options are agnostic, Christian, atheist, and other. How many degrees of freedom are there?
  1. 9
  2. 12
  3. 20
  4. 3
Explanation
Answer: B - There are 12 degrees of freedom. A multiple sample chi-square is used to analyze this data, since there are two independent variables. The formula for degrees of freedom in a multiple sample chi-square is df=(#rows-1)x(#columns-1). There are 5 rows for ethnicity and 4 rows for religious views. So, degrees of freedom is 5 minus 1 (4) times 4 minus 1 (3).
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