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Table 12 Confusion matrix of the NB 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 40.0% 9.5% 0.9% 0.0% 38
32.5–55 18.2% 42.9% 9.4% 1.2% 154
55–77.5 18.2% 42.9% 70.4% 19.3% 1016
≥ 77.5 23.6% 4.8% 19.2% 79.5% 646
Sum 55 42 1270 487 1854