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1. A researcher at a private college in Oregon was interested in
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1.  A researcher at a private college in Oregon was interested in relating cumulative GPA (CGPA) on graduation from the college to SAT math scores. For last year?s graduating class she computed a correlation of r = 0.43. How much of the variability in CGPA can be associated with differences in SAT math scores?

 

3.   For each of the two scatterplots below, I have provided the value for the coefficient of determination. In each case, please compute the value for the correlation coefficient.                               

                                       Coefficient of Determination

                        95%

                      27%

                        r =

                     r =

 







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