Although survey data are sometimes weighted by their selection weights, it is often preferable to use auxiliary information available on the whole population to improve estimation. Calibration weighting (Deville and Sarndal, 1992, Journal of the American Statistical Association 87: 376-382) is...

In this presentation, I update Nichols and Schaffer's 2007 UK Stata Users Group talk on clustered standard errors. Although cluster-robust standard errors are now recognized as essential in a panel-data context, official Stata only supports clusters that are nested within panels. This...