BETA.DIST function

The BETA.DIST function returns the probability of a given value as defined by the beta distribution function.

Parts of a BETA.DIST function

BETA.DIST(value, alpha, beta, lower_bound, upper_bound)

Part Description Notes
value The value at which to evaluate the probability function.
  • The given value must be a number from the given lower boundary to the given upper boundary.
alpha The first shape parameter of the distribution.
  • The given alpha must be a positive number.
beta The second shape parameter of the distribution.
  • The given beta must be a positive number.
lower_bound The lower boundary of the function.
  • The default lower boundary is 0.
upper-bound The upper boundary of the function.
  • The default upper boundary is 1.

Sample formulas

BETA.DIST(0.65, 1.234, 7, 0.5, 3)

BETA.DIST(0.42, 3, 8)

BETA.DIST(0.92, 0.5, 0.7)

BETA.DIST(A5, 0.5, 0.7, -1, 1)

Note

  • You can use BETADIST or BETA.DIST to perform this function.

Example

In this example, the cumulative probability of beta distribution at 0.3 is parameterized by an alpha of 5 and a beta of 1, defined over [-1, 1]:

  A B C D E F
1 Value Alpha Beta Lower bound Upper bound Solution
2 0.3 5 1 -1 1 0.1160290625
3 0.3 5 1 -1 1 =BETA.DIST(0.3, 5, 1, -1, 1)
4 0.3 5 1 -1 1 =BETA.DIST(A4, B4, C4, D4, E4)

Related function

BETAINV: The BETA.INV function returns the value of the inverse beta distribution function for a given probability.

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