# Standard Deviation (Stddev)

Standard Deviation vs. Variance: What's the Difference?
Standard Deviation Standard deviation is a statistic that looks at how far from the mean a group of numbers is, by using the square root of the variance. The calculation of variance uses squares...

numpy.std — NumPy v1.17 Manual
The standard deviation computed in this function is the square root of the estimated variance, so even with ddof=1, it will not be an unbiased estimate of the standard deviation per se. Note that, for complex numbers, std takes the absolute value before squaring, so that the result is always real and nonnegative.

Java Program to Calculate Standard Deviation
Visit this page to learn about Standard Deviation. To calculate the standard deviation, calculateSD() function is created. The array containing 10 elements is passed to the function and this function calculates the standard deviation and returns it to the main() function. Example: Program to Calculate Standard Deviation

STDDEV - Harris Geospatial
The STDDEV function computes the standard deviation of an n -element vector. Note: STDDEV uses the MOMENT function to compute the standard deviation. See MOMENT for details on how the value is calculated.

How to Interpret Standard Deviation in a Statistical Data Set
Standard deviation can be difficult to interpret as a single number on its own. Basically, a small standard deviation means that the values in a statistical data set are close to the mean of the data set, on average, and a large standard deviation means that the values in the data set are farther away …

How to Calculate Standard Deviation in Excel: 7 Steps
Type in the standard deviation formula. The formula you'll type into the empty cell is =STDEV.P( ) where "P" stands for "Population". Population standard deviation takes into account all of your data points (N). If you want to find the "Sample" standard deviation, you'll instead type in =STDEV.S( ) here. Sample standard deviation takes into account one less value than the number of data points you have (N-1).

Pivot Table Summary Functions: StdDev and StdDevp - Excel
Like the variance, standard deviation is a measure of how widely the values vary from the average of the values. The StdDevp summary function is used when the entire population is used in the calculation. If a sample of the data is used, instead of the entire population, then use the StdDev summary function.
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