Geometric Mean/Average

[kevinziegler]

Hi,

Is there a build in formula in the ti-89 for calculating the geometric mean/average of values?

Thanks in advance.

[trashcan]

Not built in but can make one


(product(list)^((dim(list)^(-1))-->geomean(list)

--> use store button

- use the change sign, not the minus sign

then you can just type geomean({100,200,300})