Logarithmic Curve Fit - HP 12c Solutions Handbook

7

Logarithmic Curve Fit

If your data does not fit a line or an exponential curve, try the following
logarithmic curve fit. This is calculated according to the equation
(ln ), and all values must be positive.
x x
A typical logarithmic curve is shown below.
The procedure is as follows:
27.34 A
0.31 B
0.36 Effective growth rate.
Projected price at the end of year 7
232.35
(1982).
103
= +
y A B