# Compute the unrestricted variance of T.

### Description

Given reliability estimates in the population and in the sample, as well as the variance of X, `Ut`

estimates
the unrestricted variance of T.

### Usage

1 | ```
Ut(rxxi, rxxa, ux)
``` |

### Arguments

`rxxi` |
the reliability estimate of x in the incumbent (restricted) population |

`rxxa` |
the reliability estimate of x in the applicant (unrestricted) population |

`ux` |
The unrestricted variance of X |

### Value

a value indicating the unresticted variance of T

### Author(s)

Dustin Fife

### See Also

`caseIV`

### Examples

1 | ```
Ut(.6, .8, 1.5)
``` |

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