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The Paired-Difference t Procedure

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Published on May 11, 2012

I discuss an example of the paired-difference t procedure, working through a confidence interval and hypothesis test and interpreting the results. (Paired-difference procedures are sometimes referred to as matched-pairs procedures, depending on the setting.)

The identical twin-schizophrenia data in this video is from:

Suddath, R., Christison, G., Torrey, E., Casanova, M., and Weinberger, D. (1990). Anatomical abnormalities in the brains of monozygotic twins discordant for schizophrenia. New England Journal of Medicine, 322:789--794. Values used in this video are simulated values based on the summary statistics found in the paper.

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