The χ² statistic is used to test whether the assumption of normality is reasonable for a given population distribution. The sample consists of 5,000 observations and is divided into 6 categories (intervals). The degrees of freedom for the chi-square statistic are A) 4,999. B) 6. C) 5. D) 4. E) 3.

Question

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Degrees of freedom = k − 3, where k = number of intervals. Thus, df = 6 − 3 = 3

The χ2 Statistic Is Used to Test Whether the Assumption

The χ² Statistic Is Used to Test Whether the Assumption