Any source of difference between treatment and control groups that is correlated with the treatment but is not a result of the treatment is called:
A) measurement error.
B) bias.
C) small-sample error.
D) difference-in-difference estimation.

Question

Quizplus · Accepted Answer

This type of source of difference is known as bias. It can occur due to factors such as selection bias or confounding variables that are not properly controlled for in the study design. Measurement errors refer to errors in data collection or recording, small-sample error refers to sampling variability, and difference-in-difference estimation is a statistical technique used to estimate treatment effects in observational studies. None of these options accurately describe the situation described in the question.

Any Source of Difference Between Treatment and Control Groups That