## Excel STDEVA Function

### Description

The Excel STDEVA function returns standard deviation based on a sample of population. It can be used to measure how widely values are dispersed from the mean value. Differ from STDEV.S function, STDEVA function evaluates logical values and text that appear in reference.

### Syntax and arguments

Formula syntax

STDEVA(number1, [number2], ...)

Arguments

 Number1: Required, a number, a reference to a sample of a population. Number2, ...: Optional, the second number or reference that is up to 255 corresponding to a population.

### Return Value

The STDEVA function returns a numeric value.

### Remark

1. STDEVA function’s arguments are a sample of population, if the data represents the entire population, STDEVPA function may be rather appropriate.

2. STDEVA function using the “n - 1” method to calculate.

3. Arguments can either be numbers or names, arrays orreferences that contain numbers, texts representations of numbers, or logical values (TRUE and FALSE) in reference.

4. STDEVA function assumes logical value TURE as 1, FALSE as zero.

5. Empty cells and text values are ignored, if TRUE and FALSE are directly typed into an array, they are ignored by STDEVA function.

6. Arguments that are error values or texts can not be translated into numbers will cause errors.

7. STDEVA function uses the equation as below:

Where

X is the sample mean, n is the sample size.

Excel 2003

### Usage and Examples

Example: Basic Usage

There is a column B4:B8 containing a population of data. To get the standard deviation, please use formula as below:

=STDEVA(B4:B8)

Press Enter key to get the standard deviation.

### Standard Deviation Functions in Excel

 Function Data Set Text annd Logicals STDEV Sample Ignored STDEV.S Sample Ignored STDEVP Population Ignored STDEV.P Population Ignored STDEVA Sample Evaluated STDEVPA Population Evaluated

#### Relative Functions:

• Excel STDEV Function
The Excel STDEV function returns standard deviation based on a given sample of data.

• Excel STDEV.P Function
The Excel STDEV.P function returns standard deviation based on the entire population. It can be used to measure how widely values are dispersed from the mean value.

• Excel STDEV.S Function
The Excel STDEV.S function returns standard deviation based on a given sample of data.

• Excel PERMUT Function
The Excel PERMUT function returns the number of permutations of a given number of objects from a set of objects.

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