298
6(DRAW)
The following are the meanings of the above parameters.
a ...... Med-Med graph slope
b ...... Med-Med graph intercept
kk
kk
k Quadratic/Cubic/Quartic Regression Graph
A quadratic/cubic/quartic regression graph represents connection of the data points
of a scatter diagram. It actually is a scattering of so many points that are close
enough together to be connected. The formula that represents this is quadratic/
cubic/quartic regression.
Ex. Quadratic regression
3(X^ 2)
6(DRAW)
The following are the meanings of the above parameters.
Quadratic regression
a ...... Quadratic regression coefficient
b ...... Linear regression coefficient
c ...... Regression constant term (intercept)
Cubic regression
a ...... Cubic regression coefficient
b ...... Quadratic regression coefficient
c ...... Linear regression coefficient
d ...... Regression constant term (intercept)
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18 - 4 Calculating and Graphing Paired-Variable Statistical Data
P.289
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