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Correlation correlation

Comment a comment by Peter Bell (gnifyus), published on 20 April 2007
Navigate to the top level to view all replies to the article Testing MythBusters' Yawn Contagiousness Data
a lone nerd has left 1 comment below

O.K., here’s a question about correlation coefficients in general.
Say you somehow repeated this same experiment 50 times, and 45 out of 50 times the percentages came out with a correlation coefficient of something below the .10 needed for a weak correlation, but at the same time in favor of the yawns being contagious. In other words the correlation coefficient of whether each experiment’s results were majority or minority would show a high correlation. What would this say about yawn contagiousness then?
Or is this considered statistically impossible to actually happen, given the CC’s obtained from the first experiment?

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RE: Correlation correlation by Anonymous :: NR0

Well, if it was the EXACT same experiment each time, you could just combine the results as a larger sampling and then compute the correlation.

Posted 20 April 2007, Hide, Parent, Reply

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