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Your data include a measure of air pollution that is measured on a continuous scale, as...

Your data include a measure of air pollution that is measured on a continuous scale, as well as another variable that measures the location of that air pollution in five counties. Which test statistic should you use to examine whether mean pollution levels vary across counties? Why should you use this test statistic?

math   Statistics-And-Probability   
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Answer #1

We should analysis of variance method to examine whether mean pollution levels vary across counties or not. In this method, F-test statistic will be calculated to make the comparison. We should F-test statistic because it helps us to compare the means of more than two variables.

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