Question
15. Consider these summary statistics for a random sample. X = 20; Sx= 3, Y=10; Sy= 5, Sxy= -18 For which of the following would
15. Consider these summary statistics for a random sample. X = 20; Sx= 3, Y=10; Sy= 5, Sxy= -18 For which of the following would the SSE (sum of the squared errors) be smallest? (E)
A. Y-hat = 4 - 6*X
B. Y-hat = 8 - 6*X
C. Y-hat = -4 + 2*X
D. Y-hat = -8 - 2*X
E. Y-hat = 50 - 2*X
The answer is E but i don't understand. Please explain.
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Prealgebra
Authors: Elayn Martin Gay
7th edition
321955048, 978-0321955043
