Error while doing Data Imputation (A sample of parameter values was inadmissible)

[B.K. Dubey]

Respected Neeraj Sir & dear honorable members:

While doing Data imputation in Amoss Version 22 an error with a message "A sample of parameter values was inadmissible" is coming followed by another message "1 parameter samples were inadmissible. 0 completed data sets have been created". 

Similarly, in another case, I am getting a message " The variable, XYZ, is represented by a rectangle in the path diagram, but it is not an observed variable."

Sir, i have followed the instruction as suggested by Prof. James Gaskin (https://www.youtube.com/watch?v=dsOS9tQjxW8). 

Kindly, suggest me how to overcome the above mentioned error.

Thanking you all in anticipation. 

Regards

B.K. Dubey 

[Neeraj Kaushik]

Dear BKD

Error: The variable, XYZ, is represented by a rectangle in the path diagram, but it is not an observed variable."

This is one of the most common error in AMOS and beginners often encounter it.

Plz understand that AMOS takes observed var (present in spss datafile) as box and unobserved (Latent var not present in spss datafile) as Ellipse.

Plz note in ur spss datafile there wont be any var XYZ present but you're using it as box here, hence the error.

Plz change that to ellipse and do remember that no ellipse can be present without a box.

Best wishes

Neeraj

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[afshee...@gmail.com]

Hello

I am also facing this problem. "While doing Data imputation in Amoss Version 22 an error with a message "A sample of parameter values was inadmissible" is coming followed by another message "1 parameter samples were inadmissible. 0 completed data sets have been created". 

Kindly tell me about its details and reason.

REGARDS

[Neeraj Kaushik]

Dear Afsheen

Data Imputation is possible only when there are no errors in running of AMOS.

Plz note the following can be most probable problems:

1. The attached SPSS datafile contain any missing value in any of the columns.

2. The sample moment matrix is not positive definite.

Before imputation, plz re-run and go to output->Notes for the model.

Plz check whether any error is mentioned there. You must rectify that error.

Best wishes

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[Afsheen Fatima]

Dear Sir.

Thanks for your help.

I checked notes for model and got this message

"The following covariance matrix is not positive definite"

What is the reason for this and remedy please?

Thanks and Regards

 

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Afsheen Fatima

[Neeraj Kaushik]

There must be some error term mentioned in the Notes for the model for which the covariance matrix is not positive definite.

You've to remove the bos containing that very statement / variable

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Afsheen Fatima

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[Rachna Vishwakama]

How we find that statement.??

[santoshba...@gmail.com]

Dear Neeraj Sir,

Thanks a lot for your suggestion.

It was very useful.

Regards,

Santosh Basavaraj

[gobin...@gmail.com]

Thank you Dr. Neeraj for showing the hint. 

In fact, I have found same error message "A sample of parameter values was inadmissible". Then I checked what Dr Neeraj suggested, "re-run and go to output->Notes for the model"

Notes for Model (Group number 1 - Default model)

The following variances are negative. (Group number 1 - Default model)

 e15 

 -.020 

Now, I checked my data set, I have found many biased responses. I removed those responses from the data sheet. Run the factor analysis using to confirm proper loading as suggested by theory. Now I saw proper loading for each construct. 

Select the new updated spss file in AMOS and run the model. And we got the following result. 

Notes for Model (Default model)

Computation of degrees of freedom (Default model)

Number of distinct sample moments: 253 

Number of distinct parameters to be estimated: 59 

Degrees of freedom (253 - 59): 194 

Result (Default model)

Minimum was achieved

Chi-square = 324.060

Degrees of freedom = 194

Probability level = .000

Finally, I run -- Analysis--> Data imputation. It runs without errors. 

Hope this helps. 

You can reach me at my email: gobin...@gmail.com

[Inês Morais]

Good Afternoon,

While doing a data imputation in AMOS i got the same error with the same message A sample of parameter values was inadmissible" is coming followed by another message "1 parameter samples were inadmissible. 0 completed data sets have been created". I checked and my base don´t have any missing values. 

Could you please help me to solve this problem?

Best Regards,

Inês Morais

[Neeraj Kaushik]

Dear Inês Morais

Does the attached diagram show the Standardized estimates or unstandardized estimates?

Plz aware.

Best wishes

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[Inês Morais]

standarized estimates 

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[Neeraj Kaushik]

Hmm....

There are certain issues which I can see in your diagram:

1. There is a very high correlation in constructs SC, PO and RP to the concerned level of 0.90

It means that your respondents do not consider them as 3 separate constructs rather its just one construct.

2. In the 3rd construct of RP->C, the beta is 1.02 which means Heywood cases.

I suggest you consider them as a second-order construct.

Best wishes

 

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[Inês Morais]

Thank you very much for your kind help and fast feedback.

Best regards,

Inês Morais

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[Inês Morais]

Dear Neeraj,

I followed your advice and considered the constructs as second-order, and I still have the same error message when I try to do the data input in AMOS. Here is the new model with the standardized estimates.

Thanks,

Ines

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[Neeraj Kaushik]

Dear Inês Morais 

Plz note we ask the respondents to rate our statements/items. They are not concerned with our constructs.

As per your version, in your work there are 3 second-order constructs having 3 sub-constructs each but first, you should start by drawing all nine construct and then connect them to the rest (Called First Order CFA) to see their relation.

What I foresee, there are no separate constructs rather its just one construct having all statements.

A very high correlation between your constructs is the main problem in your work.

Best wishes

 

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[Inês Morais]

Dear Mr. Kaushik,

Thank you very much for your help. It's great having professionals like you that make our scientific community better and helps all colleagues. 

Best regards,

Inês Morais

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[Inês Morais]

Dear professor,

sorry to bother you again. But i tried to do another AFC and i still can´t do the data impute. Could you see this model for the last time and tell me why its not possible to do the data impute? The following model is present with the standarized estimates.

Best regards,

Ines Morais

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[Neeraj Kaushik]

Dear Inês Morais

One of the most common issues which prevent Data Imputation is the presence of any missing value in the attached spss file. PLz note, I'm saying any missing value anywhere in the file restricts imputation.

So, I shall request you to check the same in your attached SPSS data file and fill in the same by any relevant value.

Best wishes

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