Table 2 The results of the regression analysis Equation (1) of each communication system

From: Limitations of time resources in human relationships determine social structures

Communication System

Coefficient

Estimate

Standard Error

t-value

P-value

Twitter

a

1.189567

0.023256

8.15

4.4×10−16

 

b

1.309346

0.006815

192.12

Less than 2.0×10−16

755 Group chat

a

1.214229

0.004640

46.17

Less than 2.0×10−16

 

b

1.269766

0.002294

553.5

Less than 2.0×10−16

755 Wall communication

a

1.562142

0.006250

89.94

Less than 2.0×10−16

 

b

1.476393

0.002769

533.2

Less than 2.0×10−16

Ameba Pigg

a

1.0954104

0.0007440

128.24

Less than 2.0×10−16

 

b

1.0939529

0.0003137

3487

Less than 2.0×10−16

Mobile phone

a

1.07332

0.15756

0.47

3.2×10−1

 

b

1.25628

0.04689

26.795

Less than 2.0×10−16

SMS

a

1.24089

0.07815

3.08

3.5×10−3

 

b

1.21949

0.02995

40.72

Less than 2.0×10−16

  1. The t-values and the p-values of a measuring the statistical uncertainty in coefficient a are larger than 1. The t-values and the p-values of b measuring the statistical uncertainty in coefficient b are not equal to 0. The coefficient a was larger than 1, that is, the user behaviour data did not obey the null model (C=Nm; a=1). Their adjusted R2 values were 0.990 (Twitter), 0.974 (755 group chat), 0.959 (755 wall communication), 0.997 (Ameba Pigg), 0.994 (mobile phone) and 0.990 (SMS)
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