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{name} Model Equation

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Parameter	Value	t-statistic
ω const Unconditional variance weight	0.0356	19.14***
α ARCH Response to squared shocks	0.0686	43.54***
β GARCH Volatility persistence	0.9165	561.25***
γ leverage Additional response to negative shocks	0.2351	7.25***

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AT&T Inc AGARCH Volatility Analysis

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