Thursday, July 26, 2012

Comparison Distribution

What is the comparison distribution and why is it important in hypothesis testing?


According to Aron, Aron, & Coups (2009), comparison distribution represents the population situation if the null hypothesis is true. It is the distribution that you compare the score of your samples to. This distribution is the difference between means. In a t test for independent means, the distribution of differences is 0. Comparison distribution is important in hypothesis testing because the significance can help you reject or fail to reject the null hypothesis.

Aron, A., Aron, E. N., & Coups, E. J. (2009). Statistics for psychology (5th ed). Upper Saddle River, NJ: Pearson/Prentice Hall.

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1 comment:

  1. interesting that you mentino t-tests, as i am using it for z-testing.

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