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Table 2 Change of outdegree and indegree centrality on weekly discussion boards

From: Exploring the relationships between interaction measures and learning outcomes through social network analysis: the mediating role of social presence

(Class A)

Rank

Week 2

Week 3

Week 5

Week 6

Week 7

Outdegree centrality

 1

A12 (0.267)

A13 (0.267)

A6 (0.167)

A13 (0.200)

A13 (0.400)

 2

A13, A6 (0.167)

A12 (0.200)

A1, A12, A13 (0.133)

A12 (0.167)

A12 (0.267)

Indegree Centrality

 1

A9, A10, A11, A13 (0.133)

A12 (0.200)

A1, A6 (0.200)

A5, A13 (0.133)

A10, A11 (0.333)

 2

A1, A2, A5, A6, A12 (0.100)

A11 (0.167)

A10 (0.167)

A1, A3, A6, A10, A12 (0.100)

A3, A12 (0.267)

(Class B)

Rank

Week 2

Week 3

Week 5

Week 6

Week 7

Outdegree centrality

 1

B9 (0.128)

B19 (0.115)

B24 (0.173)

B9, B10, B20 (0.115)

B10, B19 (0.154)

 2

B19 (0.115)

B10 (0.077)

B10 (0.154)

B4, B14, B19 (0.077)

B9, B25 (0.115)

Indegree centrality

 1

B11 (0.115)

B11 (0.103)

B19, B25 (0.154)

B13 (0.154)

B4 (0.173)

B2, B19. B26 (0.115)

 2

B9 (0.103)

B21 (0.090)

B24 (0.135)

B20 (0.115)

B9, B10, B25 (0.096)

(Class C)

Rank

Week 2

Week 3

Week 5

Week 6

Week 7

Outdegree centrality

 1

C17, C25 (0.098)

C27 (0.161)

C21 (0.179)

C21 (0.107)

C10, C21, T1 (0.125)

 2

C13, C21, C27 (0.080)

C17 (0.143)

C10. C13 (0.143)

C12, C22 (0.095)

C6, C13 (0.107)

Indegree centrality

 1

C17 (0.098)

C20 (0.125)

C27 (0.143)

C17 (0.095)

C10, C18 (0.143)

 2

C13 (0.089)

C12, C17, C27, C28 (0.107)

C21 (0.125)

C10, C21, C22 (0.083)

C6, C15, C20 (0.107)

(Class D)

Rank

Week 2

Week 3

Week 5

Week 6

Week 7

Outdegree centrality

 1

D3, D9, D19 (0.115)

D3 (0.135)

D11 (0.115)

D3, D16, D19, D23, D25 (0.154)

D5 (0.154)

 2

D11, D16, D17, D20 (0.096)

T1 (0.115)

D5, D18 (0.096)

D5, D9, D10, D20, D21, T1 (0.115)

D9, D21 (0.115)

Indegree centrality

 1

D9, D26 (0.115)

D2, D3 (0.115)

D3, D4, D23 (0.096)

D19 (0.192)

D5 (0.115)

 2

D5, D7, D10, D11 (0.096)

D16, D18, D20 (0.096)

D1, D10, D14, D15, D24 (0.077)

D16, D23, D26 (0.154)

D2, D4, D12, D13, D20 (0.096)