Thursday

August 21, 2014

August 21, 2014

Posted by **Lindsey** on Monday, February 18, 2013 at 5:04pm.

2

5

10

6

None of the above

- Statistics -
**MathGuru**, Monday, February 18, 2013 at 8:38pmThe 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**

MATH - A data set has the following points: (0, 2), (4, 1), (6, 0) The slope of ...

Algebra 2 - A data set has the following point: (1,8)(2,7)(3,5) The slope of ...

statistics - basically i'm at the begining of the text book doing summer work it...

Math - The stem-and-leaf plot shows the heights in centimeters of Teddy Bear ...

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 - X Y 0 23 2 27 2.3 29 4.1 32 5 35 What is the correlation for this ...

statistics - Suppose you have a data set that is normal and with a mean of 78 ...

Statistics - I you are told that a data set has a mean of 25 and a variance of 0...

algebra - a data set has the following points (0,2) (4,1) (6,0) the slope of ...

math - You are given the following: there are 27 pieces of data mean is 60 ...