The DHYPER function returns the value of the "probability density" (probability mass
function) of the hypergeometric distribution at point x. It returns the probability that x samples
from N trials are drawn without replacement.
Syntax
IDAX.DHYPER(BIGINT x, BIGINT wu, BIGINT bu, BIGINT N)
Parameter descriptions
- x
- Mandatory.
- The number of white balls that are drawn without replacement from an urn that contains black
balls and white balls.
- Data type: BIGINT
- wu
- Mandatory.
- The number of white balls in the urn.
- If wu is negative, DHYPER(x,wu,bu,N) is null for all x values and N values.
- Max: 0
- Data type: BIGINT
- bu
- Mandatory.
- The number of black balls in the urn.
- If bu is negative, DHYPER(x,wu,bu,N) is null for all x values and N values.
- Max: 0
- Data type: BIGINT
- N
- Mandatory.
- The number of balls that drawn from the urn without replacement.
- If N is 0 or less, DHYPER(x,wu,bu,N) is null for all x values, wu values, and bu values.
- Max: 1
- Data type: BIGINT
Returned information
DECFLOAT(16) for the probability density at point x.