Consider the following to answer the question(s) below:
An online book store wants to determine if there is an association between coupon redemption and gender. After a special coupon broadcast to its reward members, the following data on coupon redemption at checkout were collected.
-The degrees of freedom associated with the test statistic is
A) 1.
B) 2.
C) 3.
D) 4.
E) 330.

Question

Consider the following to answer the question(s) below:
An online book store wants to determine if there is an association between coupon redemption and gender. After a special coupon broadcast to its reward members, the following data on coupon redemption at checkout were collected. 
-The degrees of freedom associated with the test statistic is
A) 1. 
B) 2. 
C) 3. 
D) 4. 
E) 330.

Quizplus · Accepted Answer

The degrees of freedom for a test statistic often depend on the specific statistical test being performed and the sample size or number of categories involved. Without additional context, it's challenging to determine the exact scenario. However, in many common statistical tests (e.g., chi-square test for independence with a 2x2 contingency table), the degrees of freedom are calculated as (rows - 1) * (columns - 1), which would result in 1 degree of freedom for a 2x2 table, making option A correct in such a context.

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