In time series data, it is useful to think of a randomized controlled experiment
A)consisting of the same subject being given different treatments at different points in time
B)consisting of different subjects being given the same treatment at the same point in time
C)as being non-existent (this is a time series after all, and there are no real "parallel universes"
D)consisting of the at least two subjects being given different treatments at the same point in time

Question

Quizplus · Accepted Answer

In time series data, the same subject (or entity) is observed over time, and different treatments or interventions are given at different points in time. This is analogous to a randomized controlled experiment, where the same subject is randomly assigned to different treatments at different points in time. Therefore, choice A is the best answer.

In Time Series Data, It Is Useful to Think of a Randomized