## The Chi-Square Equation

## Here's the equation:

Like the table for the t-distribution, the table for the chi-square distribution uses the concept of degrees of freedom along with the significance level to find the critical values within the curve:

## Degrees of Freedom =

n- 1Table of the Chi-Square Distribution

## In the following case example, we consider a practical application of variance testing.

Case Example: Variance and Pharmaceuticals

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