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That looks like a 0.86 effect
size which is pretty substantial. Of course, testing the question of whether or
not those who take makeup exams do worse than the class as a whole is not the
same as testing the question of whether or not students benefit from delaying
the test. It might indicate ability or study habit differences between the two
groups but, on an individual basis, it may still be true that delaying the test
might lead to a higher score on that test for most people. One imperfect way to
approach that question would be to compare z-scores of those taking the makeup
to their z-scores on the other tests. At least that way you could tell if their
makeup test score was higher or lower than their score on the nonmakeup tests
relative to others. Rick Dr. Rick Froman From: Miguel Roig
[mailto:[EMAIL PROTECTED] I allow
my students in General Psych. to miss up to 2 regular exams (out of 5) for
whatever reason and they can then take them as make-ups during the week of
final. So, I went back to my grade book and looked at four recent sections of
General Psych. I took the final grades of all students who took make-ups and
then compared them with a t-test to a group that had not taken any make-ups.
For the latter group I simply went down the list for each course and selected
every third student who had not taken a make-up. You are currently subscribed to tips as: [email protected] To unsubscribe send a blank email to [EMAIL PROTECTED] |
