1. Suppose the linear regression model is如果不恒成立,则称误差项是序列相关的(自相关的)。(serial correlation) 2.产生序列相关的原因及序列相关的影响 1)原因 (1)经济行为的惯性或冲击的惯性(SARS) (2)模型误设(Model misspecification) 2、序列相关对估计与检验的影响与异方差性类似
Ch. 11 Panel Data model Data sets that combine time series and cross sections are common in econo- metrics. For example, the published statistics of the OECD contain numerous series of economic aggregate observed yearly for many countries. The PSID is a studies of roughly 6000 families and 15000 individuals who has been interviews periodically from 1968 to the present