Prediction model having zero value for variable results NAN P-value

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suraj karki le 14 Juin 2022

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https://fr.mathworks.com/matlabcentral/answers/1739820-prediction-model-having-zero-value-for-variable-results-nan-p-value

Modifié(e) : suraj karki le 14 Juin 2022

I am developing a quadratic model. the coefficient for one variable is zero and which results P-value as Nan. What may be the reason for this situation and how can we solve it?

Similary, while running this model, a different message has shown in command window i.e " Warning: Regression design matrix is rank deficient to within machine precision. "

What may be the solution for this problem?