SD equation

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v63800
Posts: 82
Joined: Mon May 16, 2016 2:56 pm

SD equation

#1 Postby v63800 » Mon May 22, 2017 7:31 pm

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

jcinsa
Posts: 192
Joined: Wed Mar 22, 2006 4:59 pm
Location: Adelaide Hills

Re: SD equation

#2 Postby jcinsa » Mon May 22, 2017 8:01 pm

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
Last edited by jcinsa on Mon May 22, 2017 8:03 pm, edited 1 time in total.
Argue with a fool, and all the casual observer will see is two fools arguing.

DenisA
Posts: 1526
Joined: Wed Nov 09, 2011 7:00 pm
Location: Sunshine Coast, QLD

Re: SD equation

#3 Postby DenisA » Mon May 22, 2017 8:01 pm

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

v63800
Posts: 82
Joined: Mon May 16, 2016 2:56 pm

Re: SD equation

#4 Postby v63800 » Mon May 22, 2017 8:10 pm

thanks guys

ajvanwyk
Posts: 440
Joined: Tue May 17, 2016 5:50 pm

Re: SD equation

#5 Postby ajvanwyk » Tue May 23, 2017 7:46 am

V63800.... or real name,

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

Albert
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Albert
Rosedale Rifle Club
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v63800
Posts: 82
Joined: Mon May 16, 2016 2:56 pm

Re: SD equation

#6 Postby v63800 » Tue May 23, 2017 5:43 pm

thanks Albert
never thought to look in xls

cheers


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