Question
Question 3 A high school guidance counselor collected the following data about the grade point average (GPA) and the SAT mathematics test score for 6
Question 3
A high school guidance counselor collected the following data about the grade point average (GPA) and the SAT mathematics test score for 6 graduating students.
GPA 2.7 3.5 3.7 3.3 3.6 3.0 SAT 450 570 700 620 640 580
(a) Calculatethesamplecorrelationcoefficientforthisdata.
(b) ExplainwhatthecorrelationcoefficientsaysabouttherelationshipbetweenGPAandSATscores? (c) What does it mean for two variables to be independent? Are SAT and GPA independent?
(d) Is the sample correlation coefficient a random variable? Does it have a sampling distribution?
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Linear Algebra
Authors: Stephen H Friedberg, Arnold J Insel, Lawrence E Spence
4th Edition
0321998898, 9780321998897
