
WEIGHTED SUMName:
where X is the response variable and W is the weights variable. The response variable and weights variable must have the same number of observations. For this command, the weights are not normalized. However, at least one of the weights must be positive and none of the weights can be negative. Otherwise, an error message is reported.
<SUBSET/EXCEPT/FOR qualification> where <x> is the response variable; <w> is the weights variable; <par> is a parameter where the weighted sum is saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET A = WEIGHTED SUM Y1 WEIGHT SUBSET Y1 > 0
LET Y = DATA 2 3 5 7 11 13 17 19 23 LET W = DATA 1 1 0 0 4 1 2 1 0 . LET A = WEIGHTED SUM Y WThe returned value is 115.
Date created: 06/29/2012 