What does mean level of the independent variable?

Answer 1

If an experiment compares an experimental treatment with a control treatment, then the independent variable (type of treatment) has two levels: experimental and control. If an experiment were comparing five types of diets, then the independent variable (type of diet) would have 5 levels. In general, the number of levels of an independent variable is the number of experimental conditions.

Answer 2

The mean level of the independent variable refers to the average value or level of the variable across all participants or cases in a study. It represents the central tendency of the independent variable within the sample.

Answer 3

Levels refer to the different kinds or amounts of the independent variable.

For example, you might be looking at the effect of varying dosages (say low and high dosages) of a drug on performance of a behaviour. Your independent variable is the drug, your levels are the dosages (low and high).

So you have 1 independent variable with 2 levels.

Getting more complicated, you might look at the differences between genders. So this would add 1 more independent variable with 2 more levels (male and female).

Hope this helps!!