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楼主: 四维
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[学科前沿] 同时存在序列相关和异方差,先解决哪个? |
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已卖:51份资源 本科生 11%
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回帖推荐It should be solved simultaneously. WLS belongs to GLS. Or GLS concept contains WLS which is a way to solve heteroskedasticity in cross-sectinal data. The Serial correlation can be thought of a heteroskedasticity problem in time domain.
Both problems violate the homoskedasticity assumption about error term in OLS.
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