Casio CFX-9970G Manual page 14

18 - 4
Calculating and Graphing Paired-Variable Statistical Data
k k k k k Quadratic/Cubic/Quartic Regression Graph
P.254 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.
Quadratic regression
Cubic regression
Quartic regression
6(DRAW)
a ......
Med-Med graph slope
b ......
Med-Med graph intercept
Ex. Quadratic regression
3(X^ 2)
6(DRAW)
a ......
regression second coefficient
b ......
regression first coefficient
c ......
regression constant term (intercept)
a ......
regression third coefficient
b ......
regression second coefficient
c ......
regression first coefficient
d ......
regression constant term (intercept)
a ......
regression fourth coefficient
b ......
regression third coefficient
c ......
regression second coefficient
d ......
regression first coefficient
e ......
regression constant term (intercept)
1 2 3 4 5
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