Statistics z Score DemoJaap Murre
This shows how to use the built-in z-score statistical function.
stat.Z() accepts a p-value (between 0 and 1) and returns the z-score. E.g., stat.Z(.5) gives 0.0. Try out other values. Also show is how to transform a z-score to an IQ score (mean is 100 and SD is 15).
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input("Type a percentile (0 to 100)","perc"); var zscore = stat.Z(response.perc/100); text("z-score is " + zscore.toFixed(2) + "
" + "IQ score is: " + (zscore*15+100).toFixed(1)); await("ESCAPE");