a market researcher believes that industry type is independent of the operating margin. He compiles a...
a market researcher believes that industry type is independent of the operating margin. He compiles a table with seven industry classifications and classifies operating margin into five levels. When applying a chi-square test of independence to this table, the number of degrees of freedom is
Homework Answers
The number of degrees of freedom = (r - 1)*(c - 1)
r = 7
c = 5
The number of degrees of freedom = (7 - 1)*(5 - 1) = 6*4 = 24
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