# NTFSTDEV

Returns standard deviation of a specified F distribution.

## Syntax

**NTFSTDEV**(

*N1,**N2*

)

#### Parameters

is a parameter of the distribution (Positive integer).**N1**is a parameter of the distribution .**N2**

## Remarks

The standard deviation of the distribution is given as:

## Example

- The example may be easier to understand if you copy it to a blank worksheet

How to copy an example

- Create a blank workbook or worksheet.
- Select the example in the Help topic.
**Note**Do not select the row or column headers.Selecting an example from Help

- Press CTRL+C.
- In the worksheet, select cell A1, and press CTRL+V.
- To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the
**Tools**menu, point to**Formula Auditing**, and then click**Formula Auditing Mode**.

1 2 3 4 5 A B Data Description 4 Value of parameter N1 30 Value of parameter N2 Formula Description (Result) =NTFSTDEV(A2,A3) Standard deviation of the distribution for the terms above