NEGBINOM.DIST 
NEGBINOM.DIST(number_f, number_s, probability_s, cumulative) 
Returns the probability distribution function OR the cumulative probability function for a negative binomial distribution. 
number_f  The number of failures. 
number_s  The threshold number of successes. 
probability_s  The probability of a success. 
cumulative  A logical value indicating the type of function to use: False (or 0) = [[probability distribution function]] (equal to) True (<> 0) = [[cumulative probability function]] (equal to or less than) 
REMARKS 
* This function was added in Excel 2010 to replace the NEGBINOMDIST function and include an option for cumulative probability. * The negative binomial distribution is a [[discrete distribution]]. * This function returns the probability that there will be "number_f" failures before the "number_s"th success, when the constant probability of a success is "probability_s". * For example, you need to find 10 people with excellent reflexes, and you know the probability that a candidate has these qualifications is 0.3. * This function calculates the probability that you will interview a certain number of unqualified candidates before finding all 10 qualified candidates. * The "number_f" and "number_s" are truncated to integers. * If any of the arguments are not numeric, then #VALUE! is returned * If "probability_s" < 0, then #NUM! is returned. * If "probability_s" > 1, then #NUM! is returned. * If "cumulative" = False, then the height of the curve at "x" is returned. * If "cumulative" = True, then the area under the curve to the left of "x" is returned. * If ("number_f" + "number_s"  1) = 0, then #NUM! is returned. * The equation for the negative binomial distribution is: ?? * You can use the BINOM.DIST function to * You can use the BINOM.DIST.RANGE function to * You can use the BINOM.INV function to return the probability of getting (greater than) a particular value using a binomial distribution. * For the Microsoft documentation refer to support.microsoft.com 

© 2024 Better Solutions Limited. All Rights Reserved. © 2024 Better Solutions Limited Top