Erl {Distributacalcul} | R Documentation |
Hypergeometric Distribution
Description
Hypergeometric distribution where we have a sample of k balls from an urn containing N, of which m are white and n are black.
Usage
expValErl(N = n + m, m, n = N - m, k)
varErl(N = n + m, m, n = N - m, k)
Arguments
N |
Total number of balls (white and black) in the urn. |
m |
Number of white balls in the urn. |
n |
Number of black balls in the urn. Can specify n instead of N. |
k |
Number of balls drawn from the urn, k = 0, 1, ..., m + n. |
Details
The Hypergeometric distribution for total items of which
are of one type and
of the other and from which
items are picked has probability mass function :
for .
Value
Function :
Invalid parameter values will return an error detailing which parameter is problematic.
Examples
# With total balls specified
expValErl(N = 5, m = 2, k = 2)
# With number of each colour of balls specified
expValErl(m = 2, n = 3, k = 2)
# With total balls specified
varErl(N = 5, m = 2, k = 2)
# With number of each colour of balls specified
varErl(m = 2, n = 3, k = 2)
[Package Distributacalcul version 0.4.0 Index]