Difference between revisions of "Documentation/How Tos/Calc: NEGBINOMDIST function"
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Revision as of 12:20, 20 November 2009
NEGBINOMDIST
Calculates probabilities for a negative binomial distribution.
Syntax:
NEGBINOMDIST(x; r; p)
- For independent trials each with a probability p of success, NEGBINOMDIST returns the probability that there will be exactly x failures before there have been r successes. The formula used is:
Example:
NEGBINOMDIST(1; 1; 0.5)
- returns 0.25 (25%), the probability that heads will come up exactly once before tails has come up when tossing a coin.
