X
The value at which to evaluate the function.
Alpha
A parameter to the distribution.
Beta
A parameter to the distribution.
IsCumulative
TRUE to return the probability that a value is at most the value of the X parameter (the cumulative distribution function). FALSE to return the height of the distribution's curve at that value (the probability density function), which is useful for plotting the distribution but is not itself a probability.
A
A lower bound for the X parameter. If omitted, the lower bound is assumed to be 0.
B
An upper bound for the X parameter. If omitted, the upper bound is assumed to be 1.
Returns
A value for a beta distribution.
Returns the cumulative distribution function or the probability density function of a beta distribution. The beta distribution is a family of continuous probability distributions, where the Alpha and Beta parameters control the shape of the distribution. The X parameter is the number at which the beta distribution is evaluated.