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Table 13 Confusion matrix of the kNN algorithm

From: Educational data mining: prediction of students' academic performance using machine learning algorithms

 

Predicted

< 32.5

32.5–55

55–77.5

≥ 77.5

Sum

Actual

< 32.5

50.0%

2.6%

1.1%

0.5%

38

32.5–55

30.0%

31.3%

8.9%

1.5%

154

55–77.5

15.0%

55.7%

72.9%

24.9%

1016

≥ 77.5

5.0%

10.4%

17.1%

73.1%

646

Sum

40

115

1089

610

1854