I have made a visualization for understanding regression towards the mean. http://emilkirkegaard.dk/understanding_statistics/ …pic.twitter.com/xIEAtQ0Dzi
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@KirkegaardEmil@PhDefunct I don't understand the table. Why are 1st and 2nd measurement equal in first line?
@sTeamTraen @PhDefunct Both are equally good measures of the latent variable.
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@KirkegaardEmil@sTeamTraen As you slide the reliability lower, the 2nd meas.occasion correlates less highly with true score than 1st -
@PhDefunct@sTeamTraen It is because of sampling error, which still exists with n=10000, but it is not very large. -
@KirkegaardEmil@sTeamTraen Ah. Thanks!
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@KirkegaardEmil@PhDefunct Hmm. Then how is "Change" calculated? (Excuse me if I am missing something obvious. Reading figure on phone.)Thanks. Twitter will use this to make your timeline better. UndoUndo
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