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A class has had two midterms, both of which showed an average score of 50 points (out of 70) and a SD of 8. The correlation between the scores was .75. Here, X = score on the first exam and Y = score on the second exam. The scatter plot is football shaped. The RMSE for the regression is closest to: .66 8 5.3 4 2

You may use the calculator above and this area as scratch paper. To see the solution just click on the button.

Carlos Rodriguez <carlos@math.albany.edu>

This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998