Question

what is the degree of freedom for a chi - square test with a contingency table of size 3x4?

Explanation:

Step1: Recall the formula for degrees of freedom

The formula for degrees of freedom ($df$) in a chi - square test for a contingency table is $df=(r - 1)(c - 1)$, where $r$ is the number of rows and $c$ is the number of columns.

Step2: Identify $r$ and $c$

Given a contingency table of size $3\times4$, $r = 3$ and $c=4$.

Step3: Calculate degrees of freedom

Substitute $r = 3$ and $c = 4$ into the formula:

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Answer:

6