<p>The <b>TDIST</b> function is one of the statistical functions. Returns the Percentage Points (probability) for the Student t-distribution where a numeric value (<b><em>x</em></b>) is a calculated value of t for which the Percentage Points are to be computed. 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.</p>
<pstyle="text-indent: 50px;"><b><em>x</em></b> is the value at which the function should be calculated. A numeric value greater than 0.</p>
<pstyle="text-indent: 50px;"><b><em>deg-freedom</em></b> is the number of degrees of freedom, an integer greater than or equal to 1.</p>
<pstyle="text-indent: 50px;"><b><em>tails</em></b> is a numeric value that specifies the number of distribution tails to return. If it is set to 1, the function returns the one-tailed distribution. If it is set to 2, the function returns the two-tailed distribution.</p>
<p>The values can be entered manually or included into the cells you make reference to.</p>
<p>To apply the <b>TDIST</b> function,</p>
<ol>
<li>select the cell where you wish to display the result,</li>