Small survey example
The fpc data frame has 8 rows and 6 columns. It is artificial
data to illustrate survey sampling estimators.
data(fpc)
This data frame contains the following columns:
Stratum ids
Sampling unit ids
Sampling weights
number sampled per stratum
population size per stratum
data
data(fpc) fpc withoutfpc<-svydesign(weights=~weight, ids=~psuid, strata=~stratid, variables=~x, data=fpc, nest=TRUE) withoutfpc svymean(~x, withoutfpc) withfpc<-svydesign(weights=~weight, ids=~psuid, strata=~stratid, fpc=~Nh, variables=~x, data=fpc, nest=TRUE) withfpc svymean(~x, withfpc) ## Other equivalent forms withfpc<-svydesign(prob=~I(1/weight), ids=~psuid, strata=~stratid, fpc=~Nh, variables=~x, data=fpc, nest=TRUE) svymean(~x, withfpc) withfpc<-svydesign(weights=~weight, ids=~psuid, strata=~stratid, fpc=~I(nh/Nh), variables=~x, data=fpc, nest=TRUE) svymean(~x, withfpc) withfpc<-svydesign(weights=~weight, ids=~interaction(stratid,psuid), strata=~stratid, fpc=~I(nh/Nh), variables=~x, data=fpc) svymean(~x, withfpc) withfpc<-svydesign(ids=~psuid, strata=~stratid, fpc=~Nh, variables=~x,data=fpc,nest=TRUE) svymean(~x, withfpc) withfpc<-svydesign(ids=~psuid, strata=~stratid, fpc=~I(nh/Nh), variables=~x, data=fpc, nest=TRUE) svymean(~x, withfpc)
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