Regress First 90% of a dataset.

[Mohd Uzzal]

I'm looking for a conditional command that will regress first 90% of a dataset. Then, the later 10% will be used to predict the dependent variable.

"Using the first 90% data (roughly 135k data), build up a credit-risk LPM model. Once the model is estimated, interpret the model. Then using the model, predict the default possibility of the rest 10% data. Comment on your accuracy level." - Professor

[Clyde Schechter]

-help if- and -help in-