[R] How to validate model?

[Maithili Shiva]

Hi!

I am working on scorecard model and I have arrived at the regression equation. I have used logistic regression using R.

My question is how do I validate this model? I do have hold out sample of 5000 customers.

Please guide me. Problem is I had never used Logistic regression earlier neither I am used to credit scoring models.

Thanks in advance

Maithili