Testing: Prediction Summary Metric Value SSE 4.23237E+11 MSE 1068779863 RMSE 32692.19881 MAD 18640.81876 R2 0.704683363 Validation: Prediction Summary Metric Value SSE 4.34238E+11 MSE 732273645.2 RMSE 27060.55515 MAD 19618.21516 R2 0.726575673 What is the average error on the validation data and test set? What does this suggest