A random sample of n observations,each of which could be classified into exactly one of k categories,is selected.How many degrees of freedom does a goodness-of-fit-test with specified probabilities have?
A)k-1
B)k-2
C)k-3
D)k +1

Question

Quizplus · Accepted Answer

The number of degrees of freedom for a goodness-of-fit-test with specified probabilities is equal to the number of categories (k) minus 1. This is because once we know the frequency counts for k-1 categories, we can determine the frequency count for the last category through subtraction. Therefore, the correct answer is A) k-1.

A Random Sample of N Observations,each of Which Could Be