# T.DIST.RT function

Returns the right-tailed Student's t-distribution.

The t-distribution is used in the hypothesis testing of small sample data sets. Use this function in place of a table of critical values for the t-distribution.

## Syntax

`T.DIST.RT(x,deg_freedom)`

The T.DIST.RT function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):

• X     Required. The numeric value at which to evaluate the distribution.
• Deg_freedom     Required. An integer indicating the number of degrees of freedom.

## Remarks

• If any argument is nonnumeric, T.DIST.RT returns the #VALUE! error value.
• If deg_freedom < 1, T.DIST.RT returns the #NUM! error value.

## Example

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

1. Select the example in this article. If you are copying the example in Excel Online, copy and paste one cell at a time.
Important: Do not select the row or column headers.

Selecting an example from Help

1. Press CTRL+C.
2. Create a blank workbook or worksheet.
3. In the worksheet, select cell A1, and press CTRL+V. If you are working in Excel Online, repeat copying and pasting for each cell in the example.
Important: For the example to work properly, you must paste it into cell A1 of the worksheet.
4. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.

A B
Data Description
1.959999998 Value at which to evaluate the distribution
60 Degrees of freedom
Formula Description (Result)
=T.DIST.RT(A2,A3) Two-tailed distribution (0.027322, or 2.73 percent)

Note   To view the number as a percentage, select the cell, and then on the Home tab, in the Number group, click Percent Style .

Applies to:
Excel 2010, Excel Web App, SharePoint Online for enterprises, SharePoint Online for professionals and small businesses