* Solution to practice problem on description of final exam ;

options linesize = 72 ;

proc format ;
value $grpfmt A = "Sensory deprivation"  B = "Control" ;
run ;


data alpha ;
infile "/group/ftp/pub/kcowles/datasets/alphawav.dat" ;
input group $ alpha ;
label alpha = "Alpha wave" ;
format group $grpfmt. ;
run ;


proc tabulate data = alpha ;
class group ;
var alpha ;
table group, alpha * (mean stddev ) ;
run ;

endsas ;