Casio fx-9750G Statistical Graphs and Calculations Manuel d'utilisateur télécharger pdf (Page 18)

300

6(DRAW)

The following are the meanings of the above parameters.

a ...... Regression coefficient

b ...... Regression constant term

r ...... Correlation coefficient

k Power Regression Graph

Exponential regression expresses y as a proportion of the power of x. The standard

power regression formula is y = a × x

, so if we take the logarithms of both sides we

get logy = loga + b × logx. Next, if we say X = log x, Y = logy, and a = loga, the

formula corresponds to linear regression formula Y = a + bX.

6(g)3(Pwr)

6(DRAW)

The following are the meanings of the above parameters.

a ...... Regression coefficient

b ...... Regression power

r ...... Correlation coefficient

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Casio fx-9750G Statistical Graphs and Calculations Manuel d'utilisateur Page 18