# TTEST

## Content

This function returns the probability associated with a t-test.

## Syntax

`TTEST( array1, array2, tails, type )`

## Arguments

This function has these arguments:

| Argument | Description |
| -------- | ----------- |
| *array1* | Array of values in the first data set |
| *array2* | Array of values in the second data set |
| *tails* | Number of tails |
| *type* | Type of t-test to perform (1, 2, or 3) |

## Data Types

Accepts numeric data for all arguments. Returns numeric data.

## Examples

`TTEST(A1:A17,B1:B17,4,3)`

`TTEST({2,2,2,3,4},{2,3,3,4,5},1,2)` gives the result 0.126036