say that you have given what we might consider a typical 75 item multiple-choice test ... exam is given from 4PM to 5PM ...
what you are interested in is the relationship between the time they take to finish (ie, turn it in) the test and their scores on the test
1. one possibility is to start the timer at 4 ... and, when each student turns in their test ... you note the time that they are turning it it (4:35 ... 4:50, etc.)
2. another possibility is to simply record the order of turn in ... first, second, third ... up to 40 if there were 40 students in the class ... you just put a 1, 2, 3 ... 40 on their answer sheet
using either or both of 1 and/or 2 ... you want to examine the relationship between "time" and "test scores"
A. what are some of the problems in the X variable if you used approach 1 or 2?
B. what might you do, statistically, to fix (to some extent) the problems there may be in 1 or 2?
C. how would you look at the relationship between using 1 and/or 2 AS X and test scores, as Y?
D. what do you think this relationship would be ... (before doing any analysis)?
_________________________________________________________
dennis roberts, educational psychology, penn state university
208 cedar, AC 8148632401, mailto:[EMAIL PROTECTED]
http://roberts.ed.psu.edu/users/droberts/drober~1.htm
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