Documentation Example 4 for PROC SURVEYMEANS

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/*          S A S   S A M P L E   L I B R A R Y                 */
/*                                                              */
/*    NAME: SVMEX4                                              */
/*   TITLE: Documentation Example 4 for PROC SURVEYMEANS        */
/* PRODUCT: STAT                                                */
/*  SYSTEM: ALL                                                 */
/*    KEYS: survey sampling, categorical data analysis          */
/*    KEYS: stratification, clustering, missing values          */
/*    KEYS: unequal weighting, descriptive statistics           */
/*   PROCS: SURVEYMEANS                                         */
/*    DATA:                                                     */
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/* SUPPORT: sasaba                                              */
/*     REF: PROC SURVEYMEANS, Example 4                         */
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/*    MISC: Analyzing Survey Data with Missing Values           */
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data IceCream;
   input Grade Spending @@;
   if Grade=7 then Prob=20/1824;
   if Grade=8 then Prob=9/1025;
   if Grade=9 then Prob=11/1151;
   Weight=1/Prob;
   datalines;
7 7  7  7  8  .  9 10  7  .  7 10  7  3  8 20  8 19  7 2
7 .  9 15  8 16  7  6  7  6  7  6  9 15  8 17  8 14  9 .
9 8  9  7  7  3  7 12  7  4  9 14  8 18  9  9  7  2  7 1
7 4  7 11  9  8  8  .  8 13  7  .  9  .  9 11  7  2  7 9
;

data StudentTotals;
   input Grade _total_;
   datalines;
7 1824
8 1025
9 1151
;


title 'Analysis of Ice Cream Spending';
proc surveymeans data=IceCream total=StudentTotals nomcar mean sum;
   strata Grade;
   var Spending;
   weight Weight;
run;