Statistical Analysis for Education and Psychology Researchers

(Jeff_L) #1

significantly
different from the
smaller
;
correlation
r2
;
**


;
Data is entered
after the DATA
statement:
;


;
Enter in the
program r1, r2, on first
line ;
followed by N1 and
N2 on the next
line **;






*****;
DATA
A; BEGIN
DATA STEP;
r1 = .92; r2 =
.82;
ENTER TWO
CORRELATIONS HERE r1 is the
larg
est;
N1 = 60; N2 =
50; *ENTER CORRESPONDING
SAMPLE SIZES HERE;
DO NOT EDIT THE PROGRAM
BEYOND THIS LINE ****;
A=LOG(1+R1); B=LOG(1−R1);
C=A−B;
D=LOG(1+R2); E=LOG(1−R2);
F=D−E;


FZ1= ROUND (.5(C), .001); THIS
COMPUTES FISHER Z TRANSFORM;
FZ2= ROUND (.5*(F), .001);
G=1/(N1−3); H=1/(N2−3); I=G+H;
SEZDIFF=ROUND (SQRT(I), .001);
Z= (FZ1−FZ2)/SEZDIFF;
Z=ROUND(Z, .001);
NORMPROB=ROUND (1 − PROBNORM (Z)
, .0 01) ;


Appendix 390
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