If a study has all the features of a true experiment, any difference between conditions (e.g., a treatment group and a control group) may be due to the manipulation of the independent variable and/or to
A) sample selection bias.
B) history.
C) random or chance variation.
D) statistical regression.

Question

Quizplus · Accepted Answer

In a true experiment, random assignment helps control for confounding variables, so any differences between groups are likely due to the manipulation of the independent variable or random variation.

If a Study Has All the Features of a True