ll predict age from the [heart disesase dataset](https://archive.ics.uci.edu/ml/datasets/heart+Disease) using the other variables as predictors.  

[Mean squared error (MSE) and root mean squared error (RMSE)](https://en.wikipedia.org/wiki/Mean_squared_error) are quick ways to evaluate performance. MSE measures the difference between observed and expected values, with smaller values indicative of greater predictive accuracy. The advantage of RMSE is that it can be easier to interpret and explain because it 