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Re: SV: SV: st: svy jackknife problems
At 03:43 AM 3/15/2006, you wrote:
Thanks Nick, this was also helful. I particularly like the advice to
use -aweigth- to get the correct point estimates for the correlation
coefficient with survey data. This should be public knowledge!
Frankly speaking I never quite figured out why Stata needs to make
these distinctions between different types of weight variables. It
is very confusing, and I can't remember having this problem when
using SAS or SPSS, so is it really necessary?
That is because SPSS weighting is terrible! Basically, it is limited
to fweights/iweights. The SPSS documentation even says "If the
weighted number of cases exceeds the sample size, tests of
significance are inflated; if it is smaller, they are
deflated." Stata has a huge edge in this respect. Sure, Stata is
confusing, but it is confusing because you have to choose the correct
option from several choices, whereas with SPSS all you have to do is
pick the single (often incorrect) option that is offered!
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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