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WorksheetFunction.Beta_Dist Method (Excel)

Returns the beta cumulative distribution function.

Version Added: Excel 2010

expression .Beta_Dist(Arg1, Arg2, Arg3, Arg4, Arg5)

expression A variable that represents a WorksheetFunction object.

Parameters

Name

Required/Optional

Data Type

Description

Arg1

Required

Double

The value between A and B at which to evaluate the function.

Arg2

Required

Double

The Alpha parameter of the distribution.

Arg3

Required

Double

The Beta parameter of the distribution.

Arg4

Optional

Variant

Cumulative - a logical value that determines the form of the function. If cumulative is TRUE, BETA.DIST returns the cumulative distribution function; if FALSE, it returns the probability density function.

Arg5

Optional

Variant

An optional lower bound to the interval of x.

Arg6

Optional

Variant

An optional upper bound to the interval of x.

Return Value

Double

The beta distribution is commonly used to study variation in the percentage of something across samples, such as the fraction of the day people spend watching television:

  • If any argument is nonnumeric, Beta_Dist returns the #VALUE! error value.

  • If alpha ≤ 0 or beta ≤ 0, Beta_Dist generates an error value.

  • If x < A, x > B, or A = B, Beta_Dist generates an error value.

  • If you omit values for A and B (lower and upper bound), Beta_Dist uses the standard cumulative beta distribution, so that A = 0 and B = 1.

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