Posted by Lindsey on Monday, February 18, 2013 at 5:04pm.
The mean of the y's = 2
Use this equation:
predicted y = (rSy/Sx)X - (rSy/Sx)xbar + ybar
...where r = correlation, Sy = sd of y, Sx = sd of x, and X is the variable in 'a + bx' equation.
Note: xbar = mean of x; ybar = mean of y.
Substituting what is known:
predicted y = (-0.8)X - (-0.8)5 + ybar
predicted y = (-0.8)X - (-4) + ybar
predicted y = (-0.8)X + 4 + ybar
predicted y = (-0.8)X + 4 + 2
predicted y = (-0.8)X + 6
Therefore: ybar = 2
I hope this helps.
Related Questions
Algebra 2 - A data set has the following point: (1,8)(2,7)(3,5) The slope of ...
statistics - Job Sat. INTR. EXTR. Benefits 5.2 5.5 6.8 1.4 5.1 5.5 5.5 5.4 5.8 5...
Statistics - Find the regression line for this data set. x y 0 23 2 27 2.3 29 4....
Statistics - The following linear equation, y = b0 + b1x, is a regression line ...
statistics - The data set healthy breakfast contains the ratings of 77 cereals ...
Statistics - Is is possible for the regression equation to have none of the ...
Statistics - Anyone know how to get me started? Calculate b0 and b1 and make an ...
statistics - A sudent is analyzing data from an experiment using a linear model...
Stats - x y 1 -10.0 2 -20.0 3 -30.0 4 -40.0 5 -50.0 - What would be the slope of...
statistics - Suppose you have a data set that is normal and with a mean of 78 ...
For Further Reading
