How Is the Time-Invariant Independent Variables and the Unmeasured Time-Invariant

question 8

Multiple Choice

How is the time-invariant independent variables and the unmeasured time-invariant variables captured in a fixed effects model?

• A) By running an ordinary least squares regression
• B) By running an ordinary least squares regression with robust standard errors
• C) By taking the mean of each variable for each unit across time, and running a regression on the collapsed dataset of means
• D) By including unit dummy variables

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A characteristic of substances or behaviors that can lead to a compulsive need for and use of a habit-forming substance or activity.

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