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ANOVA Vs. "t" Test or a "z" Test

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What are some business situations in which ANOVA would be more appropriate than a "t" test or a "z" test?

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T-test and z-test are appropriate tests when we are testing hypothesis about the dependent variable of a single group or when we are comparing a dependent variable across two groups. ANOVA is used whenever the number of groups is 2 or more. We can use the t-test / z-test to do the pair-wise comparison of dependent variable when we have more than 2 groups, ...

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