What is the sample correlation coefficient?
Please use the data in the attachment (BELOW).
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Question 1
What is the sample correlation coefficient?
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Question 2
What is the test statistic for the sample correlation coefficient?
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Question 3
What is the slope of the regression line?
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Question 4
What is the intercept of the regression line?
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Question 5
What is the R2Â of the regression?
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Question 6
What is the fitted value of the 15th observation?
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Question 7
What is the residual of the 27th observation?
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Question 8
Suppose you run a regression model and find a slope of 2 and an intercept of 0. Which if the following the most appropriate interpretation?
a) Increasing X causes Y to increase by twice as much.
b) If we observe X, our best guess of Y is twice as high as the observed value.
c) Y is always higher than X by a factor of two.
d) Increasing Y causes X to increase by half as much.
e) X and Y always move in the same direction.
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Answers
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Posted 03 May 2017 05:05 AM
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