Sunday, February 18, 2018

1/2 the square root of 3..............forms reflexive symmetry with the 1st stand dev from the norm........................which, when cut in half..........is a garbled pi........


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Three standard deviations account for 99.7% of the sample population being studied, assuming the distribution is normal (bell-shaped). (See the 68-95-99.7 rule, or the empirical rule, for more information.)

Standard deviation - Wikipedia

https://en.wikipedia.org/wiki/Standard_deviation
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Representation of the three-sigma rule. The dark blue zone represents observations within one standard deviation (σ) to either side of the mean (μ), which accounts for about 68.2% of the population.

Percentile - Wikipedia

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Search for: What percentile is 1 standard deviation?
In statistics, the 68–95–99.7 rule is a shorthand used to remember the percentage of values that lie within a band around the mean in a normal distribution with a width of two, four and six standard deviations, respectively; more accurately, 68.27%, 95.45% and 99.73% of the values lie within one, two and three standard ...

68–95–99.7 rule - Wikipedia

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The standard deviation is a measure that summarises the amount by which every value within a dataset varies from the mean. Effectively it indicates how tightly the values in the dataset are bunched around the mean value. ... When the values are spread apart the standard deviation will be relatively large.

The Standard Deviation

libweb.surrey.ac.uk/library/skills/Number%20Skills%20Leicester/page_17.htm
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The bell curve (what statisticians call a “normal distribution“) is commonly seen in statistics as a tool to understand standard deviation. The following graph of a normal distribution represents a great deal of data in real life. The mean, or average, is represented by the Greek letter μ, in the center.Oct 25, 2017

Standard Deviation: Simple Definition, Step by Step Video

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Standard deviation - Wikipedia

https://en.wikipedia.org/wiki/Standard_deviation
Three standard deviations account for 99.7% of the sample population being studied, assuming the distribution is normal (bell-shaped). (See the 68-95-99.7 rule, or the empirical rule, for more information.)
‎68–95–99.7 rule · ‎Geometric standard deviation · ‎Average absolute deviation
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