Difference between revisions of "Documentation/How Tos/Calc: CRITBINOM function"
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Revision as of 09:06, 24 November 2009
CRITBINOM
Returns the smallest value for which the cumulative binomial distribution is greater than or equal to a criterion value.
Syntax:
CRITBINOM(n; p; a)
- With n independent trials, each with a probability p of success, CRITBINOM returns the number of successes, up to and including which are expected with a probability a. See the examples to relate this to BINOMDIST.
- CRITBINOM is useful in quality assurance procedures.
Example:
CRITBINOM(100; 0.5; 0.9)
- returns 56.
BINOMDIST(56; 100; 0.5; 1)
- returns approximately 0.9 (90%), the probability that heads will come up 56 or fewer times in 100 flips of a coin.