Current Sherman County, Texas Population, Demographics and stats in 2016, 2015.
Mean female height: 64 in. Standard deviation: 2.8. Out of 100 million adult females in the US, less than 5 million of them are taller than 68.2 inches, or 5 8.2. Out of 100 million adult males, less than 5 million are shorter than 66 inches, or 5 .
The standard deviation is the square root of the variance, which in this case is or 1.73. Comparison to mean absolute deviation. The mean absolute deviation is when the negative sign is ignored so that all deviations are converted to positive numbers, summed, and then averaged.