      assume dependent variable y( continuous),independent variable x (
continuous),I try to  categorize x with some interval,such that,those
intervals would has most significant different effect on y.
   any one knows which method I should apply,I know it will cause the loss
of information,but can I really do that?or by using what mehod ,I will keep
the loss minimal,all I want just some key words,thanks in advance~

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