Try a simpler model

[Jan Veldsink]

I have made a model. All variables that I put in have a P value < 0,001 ... Wizzard is now complaining about :

Not enough observations, Try a simpler model.

What smart way can I use to make the model simpler.

With kind regards,

Jan

[Evan Miller]

Hi Jan,

You might try deleting variables that have a lot of missing rows. This will let you include more variables, because the number of variables is limited by the number of rows with no missing data.

There are some more advanced techniques you might use in a program like R, such as principal components analysis.

Best regards,

Evan

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Evan Miller
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