SOURCE Subcommand (WLS command)

SOURCE is used in conjunction with the DELTA subcommand to compute weights. SOURCE names the variable that is the source of heteroscedasticity.

• The only specification on SOURCE is the name of a variable to be used as the source of heteroscedasticity.
• Only one source variable can be specified.
• If neither SOURCE nor WEIGHT is specified, the first independent variable specified on the VARIABLES subcommand is assumed to be the source variable.