Why do we perform the F-test before running the t-test ? – 1 pg

 One of our goals this week is to describe how t-tests allow us to compare and evaluate averages from two data samples. In our discussion post, let’s analyze and evaluate an important prerequisite to using the appropriate t-test.
Why do we perform the F-test before running the t-test for independent samples? What is the null hypothesis for the F-test?

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