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One-way ANOVA test and t-tests compare means. Which of the following should you consider to select...

One-way ANOVA test and t-tests compare means. Which of the following should you consider to select the One-way ANOVA over multiple t-tests when you have more than two groups?

A. Multiple t-Tests will increase the likelihood of a Type I Error.

B. Multiple t-Tests will decrease the likelihood of saying something is significant when it is not.

C. Multiple t-Tests will increase the likelihood of more accurate t-values.

D. Multiple t-tests allow to run more tests and the more tests run lead to fewer errors being accumulated.

math   Statistics-And-Probability   
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Answer #1

Correct option : A. Multiple t-Tests will increase the likelihood of a Type I Error.

Reason : Even when more than two groups are compared, some researchers erroneously apply the t test by implementing multiple t tests on multiple pairs of means. It is inappropriate because the repetition of the multiple tests may repeatedly add multiple chances of error, which may result in a larger Type 1 error level than the pre-set level of significance.

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