Englishfor English speakers
variance
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noun
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
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noun
an official dispensation to act contrary to a rule or regulation (typically a building regulation)
a zoning variance
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noun
(= variation)
an activity that varies from a norm or standard
any variation in his routine was immediately reported
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noun
(= division)
discord that splits a group
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noun
(= discrepancy)
an event that departs from expectations
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noun
(= variability)
the quality of being subject to variation
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noun
(= divergence)
a difference between conflicting facts or claims or opinions
a growing divergence of opinion
estimate
Noun
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An estimate is a judgement of a size, value, amount, cost, etc., which is based on incomplete information.
British Telecom will give you an estimate of the cost before doing any work.
estimate
Verb
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If you estimate the number, size, value, amount, cost, etc. of something, you guess based on incomplete information.
It's difficult to estimate how long it will take to get to London because we don't know how bad the traffic will be.