Modelization and Calibration of the Power-Law Distribution in Stock Market by Maximization of Varma Entropy

Table 3

Power-law distribution test in the tail region of return distribution of CSI 300 index.

Variable	R^2	q
Δt = 10 min	0.9106	4.55	0.36	32.34	−0.37	−169.21
Δt = 20 min	0.9881	6.45	0.51	20.70	−0.29	−99.28
Δt = 30 min	0.9880	4.66	0.41	20.91	−0.41	−106.09
Δt = 40 min	0.9943	3.35	0.33	21.61	−0.24	9.08
Δt = 50 min	0.9981	3.85	0.39	18.42	−0.59	−104.64
Δt = 60 min	0.9970	3.67	0.38	17.49	−0.64	−99.89
Δt = 70 min	0.9895	2.83	0.32	19.32	0.13	50.15
Δt = 80 min	0.9866	2.38	0.30	22.66	−1.59	−174.47

¹The data used are CSI 300 index of 2018 obtained from Wind.