Fisher, FisherInv and FisherDist

I want a detailed explanation on Fisher, FisherInv, and FisherDist which we find in Excel 2007.

What is Fisher useful for?

Ganivada, please edit your thread title to something more descriptive of your problem. Even "Need explanation of the Fisher, FisherInv and FisherDist functions" would be better.

Good thread titles make searching for similar threads more likely to return matches, as well as when users search via Google/Bing/etc. Someone typing "Fisher" into Google will likely never see this site.