Owner's manual

68
69
Exponential regression
• The regression formula is y = A•e
B•x
(Iny = InA + Bx).
Enter the y data as the logarithm of y(ln), and the x data
the same as that for linear regression.
• Estimated values , and based on the regression
formula can be calculated using the following formulas:
• Correction is performed the same as in linear regression.
Constant term A is obtained by ,
estimated value is obtained by x
, and estimated value is obtained by y
. ∑y, ∑y
2
and ∑xy are obtained by ∑Iny, ∑(Iny)
2
and ∑x•Iny respectively.