Casio fx-9750G Statistical Graphs and Calculations Manual do Utilizador descarregar pdf (Página 16)

298

6(DRAW)

The following are the meanings of the above parameters.

a ...... Med-Med graph slope

b ...... Med-Med graph intercept

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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