precision(redirected from precisionism)
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a measure of the dispersion of the values of a random variable. The precision h is related to the standard deviation σ by the formula
This method of measuring dispersion is justified since, in the case of a normal distribution, the probability density of a random variable with precision h and mathematical expectation a is described by the formula
The precision is used as a measure of the dispersion primarily in gunnery theory and the theory of errors.