In a quasi-experiment
A)quasi differences are used, i.e., instead of ?Y you need to use ( $\bar { Y } \text { after }$ - ? × $\bar { Y } \text { before }$ ), where 0

Question

In a quasi-experiment
A)quasi differences are used, i.e., instead of ?Y you need to use ( $\bar { Y } \text { after }$ - ? × $\bar { Y } \text { before }$ ), where 0 < ? < 1.
B)randomness is introduced by variations in individual circumstances that make it appear as if the treatment is randomly assigned.
C)the causal effect has to be estimated through quasi maximum likelihood estimation.
D)the t-statistic is no longer normally distributed in large samples.

Quizplus · Accepted Answer

In a quasi-experiment, the assignment to the treatment or control group is not random but is determined by circumstances outside the control of the researcher. This can make it appear as if the treatment is randomly assigned due to variations in individual circumstances, even though it is not.

In a Quasi-Experiment A)quasi Differences Are Used, I Yˉ after \bar { Y } \text { after }Yˉ after

In a Quasi-Experiment
A)quasi Differences Are Used, I $\bar { Y } \text { after }$