I am not the greatest fan of NHST, but do my duty to teach it. For a good
while now I have been disturbed that a substantial proportion of my
undergraduate students never figure out how to decide whether or not a test is
significant. I tried stressing that p is a measure of the goodness of fit
between the data and the null, that p is like the strength of evidence in
support of the accused null defendant in statistical court, and so on. Nothing
seemed to help much.
Now one of my teaching assistants has discovered why. Given two
numbers, these students are unable to identify which is smaller. No, I am not
kidding. Yes, this involves numbers between 0 and 1. My TA spend half an hour
trying to teach them how to tell which is the smaller of two numbers, without
great success.
Karl W.
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