Submissions will be judged based on their RMSE on the test set up here on kaggle. Your "score" on the public leaderboard is the RMSE on 30% of the test set. Your REAL score on the competition is the RMSE on the remaining 70% of the test set. A great score on the private leaderboard may not give a great score on the rest of the test set.
Submission Format
A submission file should contain two columns: Id and SalePrice; be sure to respect the capitalization.

The file should contain a header and have the following format:

Id,SalePrice
2,4.974
4,2.9517
5,6.424
6,2.0819
etc.