NEGBINOM.DIST(10,5,0.5)

NEGBINOM.DIST(A2,A3,A4)

**Syntax**

NEGBINOM.DIST(num_fail, num_success, [probability])

- num_fail - The number of unsuccessful tests.
- num_success - The number of successful tests.
- probability - The probability of the success of an attempt.

**Examples**

NEGBINOM.DIST(10,5,0.5) returns a value of 0.03054

**Notes**

- NEGBINOM.DIST returns the probability that there will be num_fail failures before num_success successes, when the constant probability of a success is probability.