microsoft excel exponential integral function approximation

The LN(Y) values are irrelevant, because you are interested in how well does your exponential fit behave (and not some intermediate auxiliary function like the logarithm of your Y values). The correlation coefficient should be calculated between your original Y values and the values generated by the approximating exponential function. I used the function CORREL (correlation coefficient), or rather its square. Microsoft and the Office logo are trademarks. Apply exponential calculation to a range of cells. In Excel, the Power function returns the result of. For example, with the normal distribution, -6 sigma to +6 sigma is probably a good enough approximation for -infinity and +infinity. If you still want to stick to Excel and stay away from apo_1's suggestions, replace the references to +/- infinity with numbers where the function is (nearly) zero or (nearly) 1. With the normal distribution, -6 sigma to +6 sigma is probably a good enough approximation for. Integral in MS Excel? Or the R 'integrate' function. Displayed in Excel diagrams: The exponential function itself. If you have more basic usage questions with Microsoft Excel. Numerical Integration Methods Whether you choose to integrate tabular data in the spreadsheet or an equation in VBA, there are two general approximations that are used to estimate the area under the curve. It can be set up with a user defined function (UDF).

Microsoft excel exponential integral function approximation