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
ratio
Noun
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A ratio is the comparison in size or number between two things. It is written mathx:y/math and read mathx/math to mathy/math. It is the same as the fraction math\frac {x} {y}/math.
The ratio of men's jobs to women's is 8 to 1.
But Germany now has one of the highest ratios of spending to GDP in the European Community.
The low student/teacher ratio makes this a great school.
distribution
Noun
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Distribution is sending or giving out things to several people, companies, places, etc.
The distribution of the mail was slowed by the snow storm.
The increase in profits was followed by a cash distribution to the investors.
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Distribution is the way that things are spread (often used in statistics).
The distribution of the new iPad was very fast because Apple had invested a lot on advertisement.
The distribution of power in the company is very narrow, with just a few managers controlling almost everything.
The test scores averaged 50% and had a normal distribution.