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Table 2 Kwiatkowski–Phillips–Schmidt–Shin (KPSS)

From: Forecasting returns volatility of cryptocurrency by applying various deep learning algorithms

Variables	At level		At first difference
Variables	Constant	Constant with trend	Constant	Constant with trend	Conclusion
Bitcoin	0.985 (0.463)	0.221 (0.146)	0.070 (0.463)	0.070 (0.146)	I (1)
XRP	0.767 (0.463)	0.226 (0.146)	0.040 (0.463)	0.025 0.146	I (1)
Ethereum	0.924 (0.463)	0.318 (0.146)	0.104331 (0.463)	0.096 (0.146)	I (1)
Tether	0.235 (0.463)	0.080 (0.146)			I (0)

Values in parentheses are Asymptotic critical values

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