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	param	t-stat
$ω$	3.2296	9.99
$α$	0.0662	5.46
$β$	0.8475	30.76
$γ_{1}$	0.0532	5.76
$γ_{2}$	-0.0655	-4.87
$γ_{3}$	0.0286	2.78
$γ_{4}$	-0.0235	-2.89

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eBay Inc Zero Slope Spline-GARCH Volatility Analysis

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