A researcher wants to perform a chi-square goodness-of-fit test on a categorical variable with 5 levels using a sample of 50 observations. The expected counts under H0 are 20, 15, 8, 4, 3.
Which condition is violated?
- A
Normality
- B
Random sample
- Ccheck_circle
Large counts (some E < 5)
- D
Independence
Explanation
The large-counts condition requires all expected counts >= 5. Here E = 4 and E = 3 fall below this threshold, so the condition is violated.