Line of Best Fit
nRegression Equation Formula Ð finds the line
of best fit
nLeast squares method (LSM)ÐPearsonÕs mathematics to create a straight line. LSM produces a value for the slope and
the intercept. With slope and intercept
Ð write an equation for a straight line
(this is one that best fits your data)
n
Ŷ = a + bX
nŶ =
predicted value of Y from X
n
a = point where line intersects Y axis a, b = regression
b = slope of the regression line
coefficients
X = X score (data) used to
predict Y