What makes an online problem-based group successful? A learning analytics study using social network analysis

BMC Medical Education

Table 1 The network variables and characteristics of the interacting PBL group networks

Variable	Median	Mean	SD^a	25th Percentile	75th Percentile
Edge count	177.500	214.3	164.318	85	274.250
Unique edges (simplified)	41.500	47.95	30.412	23	78
Mean degree	16.444	23.502	22.647	6.208	34.712
Mean distance	1.537	1.51	0.275	1.239	1.739
Transitivity	0.667	0.576	0.326	0.245	0.902
Reciprocity	0.690	0.651	0.216	0.522	0.817
Centralization in degree ^b	0.249	0.266	0.121	0.174	0.341
Centralization out degree ^b	0.453	0.488	0.265	0.220	0.7
Centralization Betweenness ^b	0.131	0.225	0.193	0.047	0.325

ISSN: 1472-6920