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I could only find one result from Yahoo Answers, but the answer wasn't clear on the exact meaning of variability and how it is different from variance.

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closed as general reference by Carlo_R., cornbread ninja 麵包忍者, TimLymington, MετάEd, Jim Jan 11 '13 at 23:30

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.If this question can be reworded to fit the rules in the help center, please edit the question.

2  
Have you tried a dictionary? – Barrie England Jan 11 '13 at 22:00
    
variance vs variability – Matt E. Эллен Jan 11 '13 at 22:53
up vote 2 down vote accepted

Variance is a measure of variability found.

The temperature of a given place will be variable. If we measure the temperature over a given period, we will have a set of results. We can then calculate the variance of those results, giving us a measure of that variability.

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