Question: We often use time period dummy variables in a panel data regression model to capture unobserved factors that a. change over time and also across
We often use time period dummy variables in a panel data regression model to capture unobserved factors that a. change over time and also across individuals. b. change over time in a similar way for all individuals. c. change across individuals only. d. are correlated with the error term. e. Allofthelisted answers are correct
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