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what is deviation from mean

Sagot :

action of departing from an established course or accepted standard.
There's mean deviation and standard deviation.

Mean Deviation: The average distance to the mean.

Standard deviation = Square root of variance

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Standard deviation formula:

[tex]\sigma =\sqrt { \frac { \Sigma { x }^{ 2 } }{ n } -{ \left( \frac { \Sigma x }{ n } \right) }^{ 2 } } [/tex]