Discover what a log-normal distribution is, its financial applications, and how to calculate it, including using Excel for ...

The LOG and the LOG 10 function are both Math and Trigonometry functions. Learn how to use the LOG and LOG 10 functions in Excel.

Calculating the return One of the best methods for calculating an average return for a stock investment is the XIRR function in Excel.

Next, have Excel run the regression on the two columns of return data you generated. Under the Data menu, the Data Analysis button allows you to select Regression.