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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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