GAMMA.DISTThe GAMMA.DIST function calculates the gamma distribution, a 2-parameter continuous probability distribution.
GAMMA.DIST(4.79, 1.234, 7, TRUE)
GAMMA.DIST(A1, B1, C1, FALSE)
GAMMA.DIST(x, alpha, beta, cumulative)
x – The input to the gamma probability distribution function. The value at which to evaluate the function.
alpha – The shape of gamma distribution.
beta – The scale of the distribution.
cumulative – Logical value that determines the form of the function.
If TRUE: GAMMA.DIST returns the left-tailed cumulative distribution function.
If FALSE: GAMMA.DIST returns the probability density function.
x, alpha, and beta must be numeric.
alpha and beta must be greater than zero.
If alpha is less than or equal to 1 and cumulative is FALSE, then x must be greater than zero; otherwise, x must be greater than or equal to zero.
GAMMA.DIST is synonymous with GAMMADIST.
The chi-squared distribution is a special case of the gamma distribution. For an integer n > 0, GAMMA.DIST(x, n/2, 2, cumulative) is equivalent to CHISQ.DIST(x, n, cumulative).
CHISQ.DIST: Calculates the left-tailed chi-squared distribution, often used in hypothesis testing.
GAMMADIST: Calculates the gamma distribution, a two-parameter continuous probability distribution.
Evaluate the probability density function of the gamma distribution at x = 5 with alpha = 3.14 and beta = 2.
=GAMMA.DIST(5, 3.14, 2, FALSE)
=GAMMA.DIST(A2, B2, C2, FALSE)