The leading example of sampling schemes in econometrics that do not result in independent observations is
A)cross-sectional data.
B)experimental data.
C)the Current Population Survey.
D)when the data are sampled over time for the same entity.

Question

Quizplus · Accepted Answer

When data is sampled over time for the same entity, the observations are not independent as they are likely to be correlated with each other. Examples of such data include time-series data, panel data, and longitudinal data. Cross-sectional data (A) refers to observations taken at a single point in time, usually for different entities such as individuals, households, or firms. Experimental data (B) involves randomized treatment assignment to different groups, so the observations are independent by design. The Current Population Survey (C) is a type of cross-sectional survey that collects data on a monthly basis from a sample of households in the US.

The Leading Example of Sampling Schemes in Econometrics That Do