binomcdf

Contents: Citation, Description, Arguments, Usage, Examples, Sub-Functions, Related Functions, Source Supported Under Version: >1.00 Current .dvrc Version: 1.29 Citation 1.10 Description Binomial distribution cumulative probability distribution function Arguments and Return Values Arguments: Numbers specifying the total number of trials (n) and the probability of success in each trial (p), and arrays specifying the number of successes for which the probability is to be computed (k1 and k2) Return Value: The probability of having between k1 and k2 (inclusive) successes in n trials If no arguments are input, binomcdf() prints its description, as shown below. Usage Syntax: binomcdf(n=n, k1=k1, k2=k2, p=p) 'n' - the total number of trials; must be scalar (1x1x1) 'k1' - the minimum number of successes 'k2' - the maximum number of successes Either k1 or k2 (but not both) can be arrays. 'p' - the probability of success in any single trial (which is the same for all trials in a binomial distribution); p must be scalar, between zero and one; if p is omitted, the function will default to 0.5 So, to find the probability of getting at least 6 heads when flipping a coin 10 times, use binomcdf(n=10, k1=6, k2=10, p=0.5) The arguments don't have to be in a specific order, but they all MUST be passed by reference. Examples dv> binomcdf() Binomial distribution cumulative distribution function binomcdf(n=n, k1=k1, k2=k2, p=p) You MUST pass all arguments by reference (not by value) n is the number of trials k1 and k2 are the number of successes p is the probability of success in each trial n and k must be positive integers p must be a real number 0 <= p <= 1 If p is omitted, this function will use p = 0.5 n and p must be scalar Either k1 or k2 (but not both) can be an array Returns the probability of k1 to k2 (inclusive) successes in n trials binomcdf(n, k1, k2, p) = sum(binompmf(n, k1:k2, p)) S.Marshall 02-11-2008 0 dv> binomcdf(n=5, k1=create(6), k2=5) 6x1x1 array of float, bsq format [24 bytes] 1.00000 0.968750 0.812500 0.500000 0.187500 0.0312500

DavinciWiki Mini-Nav Bar Contents Functions Function Categories Common Procedures Glossary Download Davinci Change Log News Mailing List Contact Developers davinci-dev [AT] mars.asu.edu All other topics See navigation on the left Major Sub-Functions binompmf create HasValue isint isscalar max min sum Related Functions binompmf math.dvrc binomcdf() Recent Library Changes Change Log Created On: 02-19-2008 Modified On: 02-19-2008