SOLUTION: It is believed that standardized test scores, such as SAT, is a good predictor of first-year college students' GPA. x 1200 1120 1000 1420 1280 750 1100 y 3.2 2.5

Question 1176943: It is believed that standardized test scores, such as SAT, is a good predictor of first-year college students' GPA.
x 1200 1120 1000 1420 1280 750 1100
y 3.2 2.5 2.7 3.5 2.9 2.2 2.3
Using the data shown above, predict a student's first-year GPA when the student scores a 1275 on the SAT. Round your final answer to two decimal places.
What percentage of variation in GPAs can be explained by students' SAT scores? Round your final answer to two decimal places.

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


Hi
Excel Spreadsheet Scatter Chart:

    X	y
1200	3.2
1120	2.5
1000	2.7
1420	3.5
1280	2.9
750	2.2
1100	2.3
 .
 x= 1275,  y = 2.98
R^2 = .68  
  68% of variation in GPAs can be explained by students' SAT scores

Wish You the Best in your Studies.

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