OzFclass

hi,
what is the fps equation to get an sd and es on 12 shots
thanks

You'd be better to use a a scientific calculator, or use a statistical calculator online to calculate sd.

ES is simply the difference between the highest and lowest values.

John

ES is just the difference from the lowest velocity in the test series to the highest.

SD takes a little more working out, but still easy.
https://www.mathsisfun.com/data/standar ... mulas.html

thanks guys

V63800.... or real name,

I use the following function in excel to help with SD calculations.

Albert

thanks Albert
never thought to look in xls

cheers