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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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1728 Appendix D<br />

Figure D.15 Output from modified !CORRTST macro<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .20<br />

Z PROB<br />

3.07 .002<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .40<br />

Z PROB<br />

1.92 .055<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .60<br />

Z PROB<br />

.52 .605<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .80<br />

Z PROB<br />

-1.59 .112<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .85<br />

Z PROB<br />

-2.41 .016<br />

SAMPLE R= .66 , N= 30 , POPULATION COEFFICIENT= .90<br />

Z PROB<br />

-3.53 .000<br />

Example 3: Generating Random Data<br />

You can use command syntax to generate variables that have approximately a normal<br />

distribution. <strong>Command</strong>s for generating five standard normal variables (X1 through X5)<br />

for 1000 cases are shown in Figure D.16. As shown in the output in Figure D.17, each<br />

variable has a mean of approximately 0 and a standard deviation of approximately 1.<br />

Figure D.16 Data-generating commands<br />

INPUT PROGRAM.<br />

- VECTOR X(5).<br />

- LOOP #I = 1 TO 1000.<br />

- LOOP #J = 1 TO 5.<br />

- COMPUTE X(#J) = NORMAL(1).<br />

- END LOOP.<br />

- END CASE.<br />

- END LOOP.<br />

- END FILE.<br />

END INPUT PROGRAM.<br />

DESCRIPTIVES VARIABLES X1 TO X5.

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