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Auxilary Vars. to make data MAR |
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Message/Author |
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Graham (2003) and Enders(2006) suggest code to make data MAR: USEVARIABLES are stage1-stage10 eversmk1 livwsmkr racewhte; MISSING = all (-1234); Analysis: TYPE = MISSING; Model: i s| stage1@0 stage2@.5 stage3@1 stage4@1.5 stage5@2 stage6@2.5 stage8@3.5 stage9@4 stage10@4.5; i on eversmk1; [stage1-stage10@0]; [i s]; stage1-stage10; i s; !auxiliary variables; livwsmkr racewhte; !correlations among AVs; livwsmkr with racewhte; !correlate with IVs; livwsmkr racewhte with eversmk1; !correlate with DVs; livwsmkr racewhte with stage1-stage10; Output: sampstat standardized; This message appears for binary or continuous aux vars. WARNING: THE LATENT VARIABLE COVARIANCE MATRIX (PSI) IS NOT POSITIVE DEFINITE. THIS COULD INDICATE A NEGATIVE VARIANCE/RESIDUAL VARIANCE FOR A LATENT VARIABLE, A CORRELATION GREATER OR EQUAL TO ONE BETWEEN TWO LATENT VARIABLES, OR A LINEAR DEPENDENCY AMONG MORE THAN TWO LATENT VARIABLES.CHECK THE TECH4 OUTPUT FOR MORE INFORMATION. PROBLEM INVOLVING VARIABLE LIVWSMKR. Advise? |
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If the variable referred to in the error message is an auxiliary variable, I think you can ignore the message. |
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