#### 15.7.11 Effective Weight

`/WEIGHT VARIABLE=`

*variable*

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.