Line of Best Fit
nSlope-intercept formula for a straight line is
n
n Y = mX + b
n
n Y and X = variables (scores) on the Y and X axes
n m = slope of the line (a constant)
n b = intercept (intersection) of line with Y axis
n Positive Ð highest point on line is Right of lowest point
n Negative Ð highest point on line is Left of lowest point
n Equal Ð horizontal lines
n Large (+ or -) Ð vertical lines