Question: The final grade in a calculus course was predicted on the basis of the students high school grade point average in mathematics, Scholastic Aptitude Test

The final grade in a calculus course was predicted on the basis of the student€™s high school grade point average in mathematics, Scholastic Aptitude Test (SAT) score in mathematics, and score on a mathematics entrance examination. The predicted grades x and the earned grades y for 10 students are given.
(a) Calculate the least squares regression line for these data.
(b) Plot the points and the least squares regression line on the same graph.

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a b Earned grade y versus predicted grade x c 89 Y xy 20 13 400 260 33 33 ... View full answer

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