15.7.11 Effective Weight


The WEIGHT subcommand is optional and must appear before TABLE. If it appears, it must name a numeric variable, known as the effective weight or adjustment weight. The effective weight variable stands in for the dictionary’s weight variable (see WEIGHT), if any, in most calculations in CTABLES. The only exceptions are the COUNT, TOTALN, and VALIDN summary functions, which use the dictionary weight instead.

Weights obtained from the PSPP dictionary are rounded to the nearest integer at the case level. Effective weights are not rounded. Regardless of the weighting source, PSPP does not analyze cases with zero, missing, or negative effective weights.