IBk classifier: k = 1 === Error on training data === Correctly Classified Instances 501 100 % Incorrectly Classified Instances 0 0 % Mean absolute error 0 Root mean squared error 0 Relative absolute error 0 % Root relative squared error 0 % Total Number of Instances 501 === Confusion Matrix === a b <-- classified as 113 0 | a = >50K 0 388 | b = <=50K === Error on test data === Correctly Classified Instances 388 77.4451 % Incorrectly Classified Instances 113 22.5549 % Mean absolute error 0.2255 Root mean squared error 0.4749 Relative absolute error 63.854 % Root relative squared error 112.5821 % Total Number of Instances 501 === Confusion Matrix === a b <-- classified as 54 62 | a = >50K 51 334 | b = <=50K