# T-value

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t-value is a statistical value usually arising after a statistical test.

From a normal distributed random variable Z and a chi-square distributed random variable V with nu degrees of freedom:

$T = \frac{Z}{\sqrt{V/\nu}}$

With a given t-value, degrees of freedom and a standard deviation set to 1 the 'x' can be computed as:

$x = t \sqrt{1/\nu}$