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From |
Richard Williams <Richard.A.Williams.5@nd.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: non-integer frequencies? |

Date |
Wed, 10 Mar 2004 23:29:46 -0500 |

At 09:49 PM 3/10/2004 -0600, ACHINTYA RAY wrote:

I think iweights will work, at least if the command allows the use of iweights. e.g. I just triedSample surveys oftentimes provide weights to convert sample estimates into representative population figures. Sometimes such frequency weights are not integers (For example, National Health and Nutrition Examination Survey III). It seems that Stata can only deal with integer frequency weights. Is there a solution? The best that I can do right now is to take the nearest integer to the non-integer frequencies. This method seems rather adhoc. Any help will be deeply appreciated.

. sum income

Variable | Obs Mean Std. Dev. Min Max

-------------+--------------------------------------------------------

income | 500 27.79 8.973491 5 48.3

. sum income [fw=1.2]

may not use noninteger frequency weights

r(401);

. sum income [iw=1.2]

Variable | Obs Weight Mean Std. Dev. Min Max

-------------+-----------------------------------------------------------------

income | 500 600 27.79 8.971993 5 48.3

However, remember that, for purposes of statistical inference, the numbers you get are wrong.

-------------------------------------------

Richard Williams, Notre Dame Dept of Sociology

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**References**:**RE: st: Problems with downloading the collinearity program from***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**RE: st: Problems with downloading the collinearity program from***From:*"Clive Nicholas" <Clive.Nicholas@newcastle.ac.uk>

**st: non-integer frequencies?***From:*"ACHINTYA RAY" <achintyar@hotmail.com>

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