The exponential regression option finds the equation of an exponential equation of
the form y = ab^{x} that best fits a set of data.
First, press
to
enter the data .

Press
to view the statistics calculation options.

The values of y must be greater than zero. (This is because the method for determining
the values of a and b in the regression equation is a least-squares fit on the
values for x and ln y.)
Press .

Enter the columns to be used for the x and y entries, c1 and c2 in this case.

The regression equation can be automatically stored in the equation editor by selecting
the Stor RegEQ.

Therefore, the best-fit exponential equation for this data is approximately
y = 0.28(2.24)^{x}.