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Casio fx-9750G PLUS User Manual

Page 290

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262

6

(DRAW)

a ......

Med-Med graph slope

b ......

Med-Med graph

y

-intercept

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.

Ex. Quadratic regression

3

(X^ 2)

1 2 3 4 5

6

6

(DRAW)

Quadratic regression

a ......

regression second coefficient

b ......

regression first coefficient

c ......

regression constant term (

y

-intercept)

Cubic regression

a ......

regression third coefficient

b ......

regression second coefficient

c ......

regression first coefficient

d ......

regression constant term (

y

-intercept)

Quartic regression

a ......

regression fourth coefficient

b ......

regression third coefficient

c ......

regression second coefficient

d ......

regression first coefficient

e ......

regression constant term (

y

-intercept)

18 - 4

Calculating and Graphing Paired-Variable Statistical Data

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