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View Poll Results: Which represents variance?  
Variance = E[(XE[X])^2] = E[X^2]  E[X]^2  74  60.16%  
Variance = Amount this month  Amount last month  6  4.88%  
Both of the above  34  27.64%  
Variance = E[42]  9  7.32%  
Voters: 123. You may not vote on this poll 

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#11




variancemagazine.com
variance.fr (Careful with the second one)
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#12




Oh, the accountants labeled it variance, but the actuary liked to say "delta."
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#13




Quote:

#14




Quote:
Ive also seen some gross misuse of credibility formulas. 
#17




I use to work at a place where we called it variance. I remember it was my first desk job as an analyst and I thought oh goody cool we were going to be calculating some complex math stuff.
Nope, it was the difference between two time periods of performance.
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#18




Four columns in a recurring presentation: LY Actual, TY Budget, TY Actual, Variance
Variance=TY ActualTY Budget It's a sensible usage. There are no probability distributions in sight, just normal nonwiggly numbers and you can pick it up from context. The word variance has a number of definitions in the dictionary and they're all reasonably related to the etymological derivation of variance. Usage where variance refers to a difference between two comparable quantities is actually closer to the way the term "variance" is used in law. 
#19




These variances are making me thirsty

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