An independent variable always has at least two
A) levels
B) conditions
C) factors
D) all of these

Question

Quizplus · Accepted Answer

An independent variable is a variable that can be manipulated or controlled by the researcher. It is designed so that it has at least two levels or variations to determine the effect on the dependent variable. For example, if the independent variable is "amount of caffeine," it may have two levels such as "no caffeine" and "high caffeine." Therefore, the best choice is A) levels.

An Independent Variable Always Has at Least Two