StatStandardDeviationP (Function)

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Number of elements found in a matrix row or in a matrix column
Managing errors

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StatStandardDeviationP (Function)

In french: StatEcartTypeP

Calculates the standard deviation for a full series of values.

Reminder: The standard deviation gives the dispersion of values in relation to the average value.

Remark: StatStandardDeviationP assumes that the arguments represent the entire population. To calculate the standard deviation for a sample of population, use StatStandardDeviation. With large-size samples, StatStandardDeviationP and StatStandardDeviation approximatively return the same value.

Versions 18 and later

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 23 and later

This function is now available for Java applications.

New in version 23

This function is now available for Java applications.

Example

See additional examples

// Calculate the standard deviation of the elements in row 1 of a matrix
ResStandardDeviationP = StatStandardDeviationP("MyMatrix", 1, False)

Syntax

<Result> = StatStandardDeviationP(<Matrix> [, <Row/Column number> [, <Row/Column>]])

<Result>: Real

Standard deviation of values,
0 if the standard deviation is null.

<Matrix>: Character string (with quotes)

Name of the matrix containing the data, defined by MatCreate.

<Row/Column number>: Optional integer

Number of the row or column containing the data (1 by default).

<Row/Column>: Optional boolean

True (by default) if the series of values corresponds to a matrix column,
False if the series of values corresponds to a matrix row.

Remarks

Number of elements found in a matrix row or in a matrix column

The number of elements found in a matrix row or in a matrix column is taken as a reference. This number of elements corresponds to:

the total number of matrix rows, returned by MatNbLine (if the calculation is performed on a column),
the total number of matrix columns, returned by MatNbColumn (if the calculation is performed on a row).

If the series contain less elements than the matrix, the missing values are automatically filled with 0. These values are taken into account during the calculations.

Managing errors

Caution: StatStandardDeviationP returns no error code. To find out whether errors have been generated when calculating the standard deviation, use StatError. To find out the error details, use ErrorInfo associated with the errMessage constant.

Related Examples:

Unit examples (WINDEV): The Stat functions

[ + ] Using the main functions for statistical calculations (using matrices):
- Calculate a sum of values
- Calculate a mean of values
- Find the minimum value in a set of values
- Find the maximum value in a set of values

Business / UI classification : Neutral code

Component : wd250mat.dll