
VALUE COUNTName:
<SUBSET/EXCEPT/FOR qualification> where <x1> is the variable for which the size is to be computed; <par> is a parameter where the size is saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional.
LET NVAL = VALUE COUNT Y
before entering the VALUE COUNT command.
Note that the VALUE COUNT statistic can also be computed using
However, the VALUE COUNT command becomes more convenient when used with these various statistics. In particular, it is useful for obtaining counts with the various cross tabulation statistics. This is demonstrated in the Program 2 example below.
let y = normal rand numb for i = 1 1 100 let y2 = y let y2 = 3 subset y > 3 let y2 = 3 subset y < 3 . let xvalue = 3 let nouth = value count y2 let xvalue = 3 let noutl = value count y2 . set write decimals 3 print nouth noutlThe following output is generated. PARAMETERS AND CONSTANTS NOUTH  0.000 NOUTL  1.000Program 2: skip 25 read ripken.dat y x1 x2 let yout = y let yout = 1 subset y < 0.2 let yout = 1 subset y > 0.4 . set let cross tabulate collapse let x1id = cross tabulate group one x1 x2 let x2id = cross tabulate group two x1 x2 let ycnt = cross tabulate size x1 x2 let xvalue = 1 let ylow = cross tabulate value count yout x1 x2 let xvalue = 1 let yhigh = cross tabulate value count yout x1 x2 . set write decimals 0 print ycnt ylow yhigh x1id x2idThe following output is generated.  YCNT YLOW YHIGH X1ID X2ID  4 2 0 1 1 4 0 0 1 2 4 1 0 1 3 4 0 0 2 1 4 0 3 2 2 4 0 1 2 3 4 4 0 3 1 4 1 0 3 2 4 1 0 3 3  
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Date created: 06/23/2014 