SOLUTION: How do you write a prediction equation for data points shown in a scatter plot?

Algebra ->  Equations -> SOLUTION: How do you write a prediction equation for data points shown in a scatter plot?      Log On


   

Question 323967: How do you write a prediction equation for data points shown in a scatter plot?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Same as you would for a line, although the symbols are different,
y=bx%2Ba
.
.
.
b=SSXY%2FSSXX
a=yave-b%2Axave
where xave and yave are the means of the input data, SSXX are the sum of the squares of the x deviations, SSXY are the products of the x and y square deviation terms.