Statics Measures Interview Question:

For a 2x2 chi square test, which of the following equations would be used to calculate the degrees of freedom?

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1. (r-1) x (c-1) x (n-1)
2. (r-c) x (n-1)
3. (r-1) x (c-1)
4. (r+1) x (c+1)

Answer: r-1) x (c-1)
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