RSCH 665 – Assignment 3.2 Correlation and Regression

 

 

A survey was conducted that asked participants to report their SAT scores and high school GPA. The following are the results:

 

SAT Score GPA
1110 3.1
1350 3.7
1300 3.8
1140 2.8
960 2.9
1400 3.8
1440 4.1
1450 4.3
1260 3.5
1370 3.8
1410 4.0
1550 4.4
1520 4.3
1110 2.9
1230 3.0
1360 3.6
1380 3.9
1060 3.0
1320 3.6
1290 3.6
1080 3.2
960 2.7
1160 2.8
1240 3.0
1400 4.2
1460 4.2
1500 4.3
1520 4.3
1550 4.4
1300 3.8
1140 3.2
1230 2.9
1330 3.4
1280 3.6
1300 3.6
1200 3.5
1080 2.7
1260 3.4

 

  1. Calculate the Correlation Coefficient and write one paragraph that describes the relationship between SAT scores and GPA for this sample.

 

  1. Calculate the expected SAT scores for the following GPAs:  2.6, 3.4, 4.2

 

  1. Calculate the expected GPA for the following SAT scores:  1160, 1290, 1440

 

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