Question
Assume John is conducting a one-way ANOVA with three groups.Naturally he specifies the null hypothesis as Mean1=Mean2=Mean3.After learned about the t-test, he claims that the
Assume John is conducting a one-way ANOVA with three groups.Naturally he specifies the null hypothesis as Mean1=Mean2=Mean3.After learned about the t-test, he claims that the ANOVA can also be accomplished by three separate t-tests on the three pairs of means.In other words, the null hypotheses in the three t-tests would be: Mean1=Mean2; Mean2=Mean3; Mean1=Mean3.He further argues that the t-tests are prefered since they help to identify which mean(s) is(are) significantly different from other(s) while the one-way ANOVA could not without further tests.Do you agree with John? Why or why not?
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