Question: how to calculate the geometric mean rate of return in excel?
Answer: Summary. The Excel GEOMEAN function returns the geometric mean for a set of numeric values. ... 
Calculate geometric mean.
Calculated mean.
=GEOMEAN (number1, [number2], ...)
number1 - First value or reference. number2 - [optional] Second value or reference.
The Excel GEOMEAN function calculates the geometric mean.