If the WEIGHT subcommand specified an effective weight variable
(see Effective Weight), then the following summary functions
use its value instead of the dictionary weight variable. Otherwise,
they are equivalent to the summary function without the
‘E’-prefix:
ECOUNT (“Adjusted Count”, F40.0)
ETOTALN (“Adjusted Total N”, F40.0)
EVALIDN (“Adjusted Valid N”, F40.0)