STDEVA function in Excel calculates the sample standard deviation of a supplied set of values.
Sample Standard Deviation is calculated using formula
Where,
- X takes each value in the set;
- X̄ is the average of the set of values;
- N is the number of values.
Syntax of STDEVA Function in Excel
STDEVA (number1, [number2], … )
Where the number arguments are numeric values for which you want to calculate the sample standard deviation.
Example of STDEVA Function in Excel
- Logical values, within arrays or reference arguments are counted in STDEVA Function where FALSE is taken as 0 and TRUE is taken as 1.
- Text values are taken as 0 in STDEVA Function
- Empty cells are ignored in STDEVA Function.
The Above example calculates the sample standard deviation of subject scores with formula
= STDEVA (A2:A13)
Which results in value 31.84432
