Displaying 1 result from an estimated 1 matches for "des4".
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des
2005 May 26
1
Survey and Stratification
...## gives mean 25.568, SE 0.9257
age.des2<-svydesign(ids=~id, strata=~stratum, weight=~I(nh/Nh), data=age)
svymean(~y, age.des2)
## gives mean 25.483, SE 0.9227
age.des3<-svydesign(ids=~id, strata=~stratum, weight=~weight, data=age)
svymean(~y, age.des3)
## gives mean 26.296, SE 0.9862
age.des4<-svydesign(ids=~id, strata=~stratum, data=age)
svymean(~y, age.des4)
## gives mean 25.875, SE 0.9437
age.des3 is the only estimator I am able to compute per hand correctly.
It is stratified random sampling with inverse probablility weighting
with weight= nh/Nh ## sample size/ stratum size.
B...