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Statistics Programs 16–1
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
16
Statistics Programs
Curve Fitting
This program can be used to fit one of four models of equations to your data.
These models are the straight line, the logarithmic curve, the exponential
curve and the power curve. The program accepts two or more (x, y) data
pairs and then calculates the correlation coefficient, r, and the two regression
coefficients, m and b. The program includes a routine to calculate the
estimates
x
ˆ
and
y
ˆ
. (For definitions of these values, see "Linear
Regression" in chapter 11.)
Samples of the curves and the relevant equations are shown below. The
internal regression functions of the HP 32SII are used to compute the
regression coefficients.