Answers_for_Regression_exercises

Answers_for_Regression_exercises - a = 1.53 Y' = 1.53 +...

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Answers for Regression exercises Multiple- Choice questions #1 b #2 d Fill- In Questions #1 slope #2 smaller #3 line of best fit Problems #1 a) Y' = a + bX b = r (Sy/ Sx b = (.50) (.35 / 75) b = (.50) (.004) b = .002 a = mean of Y - (b) (Mean of X) a = 2.65 - (.002) (560) a = 2.65 - 1.12
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Unformatted text preview: a = 1.53 Y' = 1.53 + .002X b) John = 485 Y' = 1.53 + (.002) (485) Y' = 2.5 Will = 710 Y' = 1.53 + (.002)(710) Y' = 1.53 + 1.42 Y' = 2.95 c) The relationship between X and Y must be linear. #2 a) Y' = 4.85 + .89X b) Y' = 4.85 + (.89) (9) Y' = 4.85 + 8.01 Y' = 12.86...
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Answers_for_Regression_exercises - a = 1.53 Y' = 1.53 +...

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