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| Latent 3-way interaction in Monte Carlo |
 
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Please help:
"THE POPULATION COVARIANCE MATRIX THAT YOU GAVE AS INPUT IS NOT POSITIVE DEFINITE AS IT SHOULD BE."
MONTECARLO:
NAMES ARE P1 - P3 C1 - C5 W1 - W3 PA1;
NOBSERVATIONS = 150;
NREPS = 1000;
ANALYSIS:
TYPE = RANDOM;
ALGORITHM=INTEGRATION;
MODEL POPULATION:
PRAC1 BY P1 - P3*1;
CON1 BY C1 - C5*1;
WAR1 BY W1 - W3*1;
PRACWAR | PRAC1 XWITH WAR1*.5;
PRACCON | PRAC1 XWITH CON1*.5;
CONWAR | CON1 XWITH WAR1*.5;
PRACCONWAR | CON1 XWITH PRACWAR*.5;
PRAC1@1;
CON1@1;
WAR1@1;
PA1 ON PRAC1*.5;
PA1 ON CON1*.5;
PA1 ON WAR1*.5;
PA1 ON PRACWAR*.5;
PA1 ON CONWAR*.5;
PA1 ON PRACCON*.5;
PA1 ON PRACCONWAR*.5;
MODEL:
PRAC1 BY P1 - P3*1;
CON1 BY C1 - C5*1;
WAR1 BY W1 - W3*1;
PRACWAR | PRAC1 XWITH WAR1*.5;
PRACCON | PRAC1 XWITH CON1*.5;
CONWAR | CON1 XWITH WAR1*.5;
PRACCONWAR | CON1 XWITH PRACWAR*.5;
PRAC1@1; WAR1@1; CON1@1;
PA1 ON PRAC1*.5;
PA1 ON CON1*.5;
PA1 ON WAR1*.5;
PA1 ON PRACWAR*.5;
PA1 ON CONWAR*.5;
PA1 ON PRACCON*.5;
PA1 ON PRACCONWAR*.5; |
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I could not fit the additional information into my previous post:
I am trying to run a monte carlo simulation study to estimate the sample size needed to conduct a three-way interaction. I received the fatal error message at the beginning of my message, and am unsure of what to do. Thank you so much for any help! |
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| Please send your full output to support along with your license number. |
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