Wed 11 May, 2011 06:48 pm
the least squares best fit line for the number of years in college X and the income level Y is Y=11.9+ 3.46X
Given that the standard errors of X and Y are Sx=1.8 and Sy = 7.2, what is the correlation coefficient?
Give me the explaination, please
It's high school math
In what you give me, it's too rough to understand.
The correlation coefficient relates directly to the regression line Y=bX+a for any two variables X and Y, where b=r(Sy/Sx). You have b in your linear equation. You have Sy and Sx in your problem information. Substitute b, Sy, and Sx in the formula above and solve for r.