TDistribution Command

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TDistribution( <Degrees of Freedom>, x )
Creates probability density function (pdf) of t-distribution with given degrees of freedom.
TDistribution( <Degrees of Freedom>, x, <Boolean Cumulative> )
If Cumulative is true, creates cumulative distribution function of t-distribution, otherwise creates pdf of t-distribution.
TDistribution( <Degrees of Freedom>, <Variable Value> )
Calculates the value of cumulative distribution function of t-distribution at variable value v, i.e. the probability P(X ≤ v) where X is a random variable with t-distribution with given degrees of freedom.
Example: TDistribution(10, 0) yields 0.5.
Note: Returns the probability for a given x-coordinate's value (or area under the t-distribution curve to the left of the given x-coordinate).

CAS Syntax

TDistribution( <Degrees of Freedom>, <Variable Value> )
Calculates the value of cumulative distribution function of t-distribution at variable value v, i.e. the probability P(X ≤ v) where X is a random variable with t-distribution with given degrees of freedom.
Example: TDistribution(10, 0) yields 0.5.
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