kishFactor | R Documentation |

Compute the design effect due to unequal weighting.

kishFactor(w, na.rm = FALSE)

`w` |
a numeric vector with weights |

`na.rm` |
a logical value indicating whether NA values should be stripped before the computation proceeds. |

The factor is computed acording to 'Weighting for Unequal P_i', Leslie Kish, Journal of Official Statistics, Vol. 8. No. 2, 1992

* deff = √ n ∑_j w_j^2 / (∑_j w_j)^2*

The function will return the the kish factor

Alexander Kowarik

kishFactor(rep(1,10)) kishFactor(rlnorm(10))

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