Table 12.

Measures of the central tendency of performance metrics for each group and cluster.

Metric	Group	Cluster	Mean	Median	Std. Dev.
Precision	GR-1	Juniors	0.54	0.5	0.14
		Seniors	0.53	0.5	0.12
		Total	0.54	0.5	0.12
	GR-2	Juniors	0.62	0.62	0.11
		Seniors	0.62	0.64	0.14
		Total	0.62	0.64	0.12
Recall	GR-1	Juniors	0.67	0.57	0.3
		Seniors	0.48	0.43	0.21
		Total	0.57	0.5	0.25
	GR-2	Juniors	1	1	0
		Seniors	0.79	0.79	0.19
		Total	0.86	0.93	0.18
F1-Score	GR-1	Juniors	0.59	0.53	0.2
		Seniors	0.47	0.43	0.1
		Total	0.53	0.48	0.16
	GR-2	Juniors	0.76	0.76	0.08
		Seniors	0.69	0.69	0.14
		Total	0.71	0.75	0.12
Accuracy	GR-1	Juniors	0.67	0.61	0.14
		Seniors	0.61	0.61	0.06
		Total	0.64	0.61	0.1
	GR-2	Juniors	0.75	0.75	0.11
		Seniors	0.72	0.75	0.13
		Total	0.73	0.75	0.11