Which condition is required before using a chi-square test for independence on a two-way table?
Answer and explanation
Correct answer: C. Each expected count should be at least 5
- Step 1: The test approximates a distribution that needs adequate counts. Step 2. The usual rule is expected counts of 5 or more. Answer: expected counts of at least 5. Why not the others: Chi-square tests of independence require categorical data where all expected cell frequencies are at least 5; normal distribution is not assumed for categorical variables.
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