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[vâŕē-əns, văŕ-]
(n.)The act of varying.
(n.)The state or fact of differing or of being in conflict. See synonyms…
(n.)A discrepancy between two statements or documents in a proceeding.
Dictionary.com · The American Heritage® Dictionary · See all 5 definitions »
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Variance - Wikipedia, the free encyclopedia
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In probability theory and statistics, the variance of a random variable or distribution is the expected square deviation of that variable from its expected value or mean. For example, a perfect die,...
en.wikipedia.org/wiki/Variance
This is part of HyperStat Online, a free online statistics book. ... The variance and the closely-related standard deviation are measures of how spread out a distribution is. In other words, they are measures of variability. The variance is computed as the average squared deviation of each number from its mean.
davidmlane.com/hyperstat/A16252.html · Cached
Analysis of variance - Wikipedia, the free encyclopedia
In statistics, analysis of variance (ANOVA) is a collection of statistical models, and their associated procedures, in which the observed variance is partitioned into components due to different exp...
en.wikipedia.org/wiki/Analysis_of_variance
Cosmic variance readers raised an astounding $11,525, with 34 people donating, impacting 2,720 students at schools across the nation. As far as I know, our generous readers once again contributed more than any other science blog out there, by a comfortable margin!
blogs.discovermagazine.com/cosmicvariance/ blogs.discovermagazine.com/cosmicvariance/ · Cached
Internet Glossary of Statistical Terms by Dr. Howard S. Hoffman ... To calculate the variance of a given population, it is necessary to first calculate the mean of the scores, then measure the amount that each score deviates from the mean and then square that deviation (by multiplying it by itself).
www.animatedsoftware.com/statglos/sgvarian.htm · Cached
Group weblog co-written by five physicists and astrophysicists. ... Cosmic variance readers raised an astounding $11,525, with 34 people donating, impacting 2,720 students at schools across the nation. As far as I know, our generous readers once again contributed more than any other science blog out there,
cosmicvariance.com/ cosmicvariance.com/ · Cached
variance - definition of variance - A measure of the average distance between each of a set of data points and their mean value; equal to the sum of the squares of the deviation from... ... portfolio variance...
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Calculating Variance by the Deviation Score Method ... Let us first consider the deviation score method for calculating the variance for a population of scores. Although in practice the deviation score is rarely used, it does help us understand how variance is calculated.
www.mnstate.edu/wasson/ed602calcvardevs.htm · Cached
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