please help asap

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#1
Report 18 years ago
#1
my c/w is due in 2mora and i need to know the formulae for standard deviation as i lost my notes on it. Please help!!
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#2
Report 18 years ago
#2
(Original post by Unregistered)
my c/w is due in 2mora and i need to know the formulae for standard deviation as i lost my notes on it. Please help!!
s.d. = square root of the variance

...the variance is given by E(X^2) - (E(X))^2
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