View source: R/betafunctions.R
rBetacBinom | R Documentation |
Random number generation under Lord's Beta Compound-Binomial distribution, where the Compound-Binomial distribution is Lord's two-term approximation.
rBetacBinom(x, N, k, l, u, alpha, beta)
x |
Number of draws. |
N |
Number of trials. |
k |
Lord's k (see documentation for the |
l |
The lower-bound location parameter of the four-parameter Beta distribution. |
u |
The upper-bound location parameter of the four-parameter Beta distribution. |
alpha |
The first shape-parameter of the four-parameter Beta distribution. |
beta |
The second shape-parameter of the four-parameter Beta distribution. |
For larger values of k
, the distribution can yield negative probabilities which returns an error.
# To draw a sample of 50 values from a Beta Compound-Binomial distribution
# with number of trials = 100, Lord's k = 1, and probabilities of successful
# trials drawn from a four-parameter Beta distribution with location-
# parameters l = .15 and u = .85, and shape parameters alpha = 6 and
# beta = 4:
rBetacBinom(x = 50, N = 100, k = 1, l = .15, u = .85, alpha = 6, beta = 4)
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