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	param	t-stat
$ω$	0.9825	7.15
$α$	0.0379	4.30
$β$	0.9237	57.64
$γ_{1}$	-0.0332	-0.58
$γ_{2}$	0.0980	1.11
$γ_{3}$	-0.1375	-2.59
$γ_{4}$	0.0636	1.49
$γ_{5}$	0.0909	2.19
$γ_{6}$	-0.1580	-3.47
$γ_{7}$	0.1256	2.79
$γ_{8}$	-0.0705	-1.35
$γ_{9}$	0.0232	0.50

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HP Inc Zero Slope Spline-GARCH Volatility Analysis

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