External module "stats/base/dists/hypergeometric/variance/docs/types/index.d"

variance

• variance(N: number, K: number, n: number): number

• Returns the variance of a hypergeometric distribution.

  Notes

  • If provided a population size N, subpopulation size K or draws n which is not a nonnegative integer, the function returns NaN.
  • If the number of draws n or subpopulation size K exceed population size N, the function returns NaN.

  Parameters

  • N: number

    population size

  • K: number

    subpopulation size

  • n: number

    number of draws

  Returns number

  variance

  Example

  var v = variance( 16, 11, 4 );
  // returns ~0.688

  Example

  var v = variance( 2, 1, 1 );
  // returns 0.25

  Example

  var v = variance( 10, 5, 12 );
  // returns NaN

  Example

  var v = variance( 10.3, 10, 4 );
  // returns NaN

  Example

  var v = variance( 10, 5.5, 4 );
  // returns NaN

  Example

  var v = variance( 10, 5, 4.5 );
  // returns NaN

  Example

  var v = variance( NaN, 10, 4 );
  // returns NaN

  Example

  var v = variance( 20, NaN, 4 );
  // returns NaN

  Example

  var v = variance( 20, 10, NaN );
  // returns NaN