Question: a. For what kind of data set is the chi-squared test for independence appropriate? b. What are the reference values for this test, if any?

a. For what kind of data set is the chi-squared test for independence appropriate?
b. What are the reference values for this test, if any?
c. What are the hypotheses?
d. How are the expected counts obtained? What do they represent?
e. What assumptions are required in order that this test be valid?

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