How does smartpls treat missing values if you only define missing values in the data, but select not to treat the missing values with either mean replacement or case wise deletion.
Best regards
Johann
Missing values
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- PLS Expert User
- Posts: 54
- Joined: Wed Oct 19, 2005 5:53 pm
- Real name and title:
I don't think smartPLS' algorithm would allow pair-wise deletion.
The only way this could work is to use pair-wise deletion in SPSS/ SAS to calculate a correlation/ covariance matrix. Then feed this matrix into Lohmoeller's LVPLS, which is also freely available on the web, to calculate your model.
A much better approach, however, has been suggested by C. Ringle in this forum. Simply do all your missing value treatments (listwise deletion, mean replacement, imputation, EM, etc.) in the statistical package of your choice BEFORE you load the data into SmartPLS. This way you have complete control over the process.
Cheers,
Stefan
The only way this could work is to use pair-wise deletion in SPSS/ SAS to calculate a correlation/ covariance matrix. Then feed this matrix into Lohmoeller's LVPLS, which is also freely available on the web, to calculate your model.
A much better approach, however, has been suggested by C. Ringle in this forum. Simply do all your missing value treatments (listwise deletion, mean replacement, imputation, EM, etc.) in the statistical package of your choice BEFORE you load the data into SmartPLS. This way you have complete control over the process.
Cheers,
Stefan