Hello

I would use Feature Selection in Data Mining but I don't understand how is calculated chi-square.

I have : 1 dependent varibales categorial(X) and many predictors continous(Y).

I think this function create a contingency table with X and Y (for each predictor Y_i) and determine if X and Y are independant ( = null hypothesis).

But I 'm not sure

Can you explain this function please?

Thanks for your response

Best