Does NAPP data have “weights”?
Most of the NAPP data are complete-count data. The use of weights is not required for generating accurate population statistics. However, the 1875 census of Norway and 1871 and 1901 censuses of Canada are samples and have person weights (PERWT) assigned to them. For all other complete count data, PERWT is set at 1. For users who are merging NAPP data with IPUMS data should keep in mind that PERWT is referred to as WTPER in IPUMS International.