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amna khalid posted on Wednesday, March 13, 2013 - 1:03 pm
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Hi, I am trying to run CFI on a scale in MPlus in which an item is used to compute two different sub-scales using reverse scoring and forward scoring. When I run the analysis in Mplus it gives me this warning WARNING: THE SAMPLE COVARIANCE IS SINGULAR. THE SAMPLE CORRELATION OF ARSQ5 AND ARSQ5R IS -1.000. NO CONVERGENCE. NUMBER OF ITERATIONS EXCEEDED. I am using the following input command. F1 by ARSQ3 ARSQ7R ARSQ8 ARSQ10 ARSQ17R; F2 BY ARSQ1 ARSQ4 ARSQ9 ARSQ14; F3 BY ARSQ5R ARSQ6 ARSQ11 ARSQ15; F4 BY ARSQ2 ARSQ5 ARSQ12 ARSQ13 ARSQ16; F5 by F1-F4; Kindly advice. |
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You cannot use two variables in an analysis that have a correlation of one or minus one. |
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amna khalid posted on Thursday, March 14, 2013 - 8:50 am
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Thank you for your reply. Is there a way to fix this correlation. I have tried incorporating this command ARSQ5 with ARSQ5R @0 but still getting the same warning. |
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You need to use just one of the variables. Fixing the correlation to zero is not the solution. |
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Demet Kara posted on Friday, November 10, 2017 - 5:52 am
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Hi, I am trying to run a simple CFA with two factors but I had a similar problem with the following message: WARNING: THE SAMPLE COVARIANCE OF THE DEPENDENT VARIABLES IS SINGULAR. PROBLEM INVOLVING VARIABLE TASC12. NO CONVERGENCE. NUMBER OF ITERATIONS EXCEEDED. I have tried to omit the item called "TASC12" but this time the same message was appeared for another one. How can I fix this? Thank you very much. |
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Send your output and data to Support along with your license number. |
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