an instructor measured quiz scores and the number of hours studying among a sample of 20...
an instructor measured quiz scores and the number of hours studying among a sample of 20 college students. if ssxy=42, ssx=91, my=7, and mx=4, then what is the regression equation for this sample?
Homework Answers
SSxy = 45
SSx = 91
Mx = 7
My = 4
Regression equation is given as:
y = b0 + b1*x
Formula for b1 = SSxy/SSx
b1 = 45/91 = 0.4945
Formula for b0 = My - b1*Mx
b0 = 4 - 0.4945*7
b0 = 0.5385
Thus, regression equation can be written as:
y = 0.5385 + 0.4945*x
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