The square of this quantity equals the expectation of X squared minus the square of the expectation of X. GE developed an industrial quality benchmark symbolized by six times this quantity.
The square of this quantity equals the expectation of X squared minus the square of the expectation of X. GE developed an industrial quality benchmark symbolized by six times this quantity. This quantity times the Z-score is used to calculate a confidence interval. The "sample" and "population" forms of this quantity use N-1 and N in the (*) denominator, respectively. This quantity is the square root of the central second moment. The empirical rule sets 68, 95, and 99.7% of the data within one, two, and three times this quantity away from the mean. For 10 points, name this square root of the variance, a measure of data spread symbolized sigma.
The square of this quantity equals the expectation of X squared minus the square of the expectation of X. GE developed an industrial quality benchmark symbolized by six times this quantity.
standard deviation [or sigma until it is read; or Six Sigma; accept uncertainty until "Z-score" is read; prompt on s]