The underlined formula represents the analytical formula of the regression curve model fitted by the computer according to the scatter plot, and r 2 represents the fitting degree, that is to say, the given analytical formula describes the change of points to the extent of 99.82%, or the contribution rate of X to the predicted variable Y reaches 99.82%, and X describes the change of Y to the extent of 99.82%.

NEm is the m power of n* 10.

3E-05 is 0.00003 (0 can be omitted).

3E5 is 300000.

3E-05=3* 10^(-5)

=3*0.0000 1

=0.00003