regression vs classification

Question

THis is more machine learning questions, but perhaps someone will be able to help. I would like to know what is the diference between regression and classification when we try to generate output for a training data set x?

Answer 1

Regression: the output variable takes continuous values.

Classification: the output variable takes class labels.

Answer 2

Same as Tim said a different way. Regression involves estimating or predicting a response. Classification is identifying group membership.