title3 'Post hoc multiple
comparison tests between the
groups';
title5 "Significance is based on
an initial alpha of &alpha (two
tailed test)";
title6 'but adjusted for the
number of pairwise comparisons
tests
run;
%mend fr;
%fr;
Figure 13: Program for
Friedman's ANOVA by
ranks and pairwise
multiple comparisons
goptions vsize=6.5 hsize=7.0
device=win target=winprtm;
proc gplot data=outreg;
axisl value=(f=simplex)
label=(f=simplex justify=right
'Standardized Maths Score')
order=90 to 140 by 10;
axis2 label=(f=simplex
'Teacher estimate of maths
ability')
order= 0 to 10 by 1
value=(f=simplex);
legend1 label =(f=simplex
'KEY:') value=(f=simplex) frame;
plot smaths*maths / frame
legend = legend1
vaxis=axis1 haxis=axis2
hminor=0;
symbol1 c= black v=circle i=R;
title1 f=simplex h=1 'FITTED
LEAST SQUARES REGRESSION LINE
FOR
PREDICTION OF STANDARDIZED';
title2 f=simplex h=1 'MATHS
ABILITY SCORE FROM TEACHER
ESTIMATE OF
MATHS ABILITY';
run;
proc gplot data=outreg;
Appendix 385