tden

This function is the T-distribution’s probability density function. It returns the value of the slope of the cumulative distribution function at the specified argument value.

Syntax

tden(x,n)

The x argument represents the independent variable and can either be a scalar or a range of numbers. If x is a range, then it must be defined by either using braces { } or by specifying a worksheet column. The n argument can be any positive integer and equals the degrees of freedom.

Example

The density function can be used to estimate the probability that the values of a T-distributed random variable T lie in a small interval. If T has 16 degrees of freedom, then to estimate the probability that the values of T lie between 1 and 1.1, multiply the density of T at 1 by the length of the interval .1:

tden(1,16) * .1 = .02346

関連情報

• tdist
• tinv