Just a quick question.
E - sum of.
E(x-10) = 208
E(x-10)^2=2716
Prove Ex^2=8876
Thanks!
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Thread: >maths help! +rep.
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28-10-2012, 11:31 PM #1
>maths help! +rep.
superhappy.
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28-10-2012, 11:52 PM #2
Got it sorted now ;l wasn't thinking.
superhappy.
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04-11-2012, 04:14 PM #3
Is x like 25 ??
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07-11-2012, 11:05 PM #4
I hadn't explained it properly. Needed to know that 20=n >so you can workout Variance + sd.
Originally Posted by Andii
Really was having a blank moment.
The answer wasn't 25 I don't think, but that's for giving it a go anyway!
superhappy.
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