Experimental Design Review

Front

What is the purpose of the control group in an experiment?

Back

The control group is used for comparisons to determine the effect of the independent variable.

Front

What is the independent variable in an experiment?

Back

The independent variable, also known as the manipulated variable, is the one variable that you change and test to see if it has an effect.

Front

How many variables should you change in an experiment?

Back

You should change only 1 variable in an experiment to maintain clarity in results.

Front

What is a controlled variable?

Back

Controlled variables (constants) are the variables that are kept the same for all subjects and samples in an experiment.

Front

What is the dependent variable in an experiment?

Back

The dependent variable, also known as the responding variable, is the variable that is measured in the experiment to see how it is affected by the independent variable.

Front

Why is it important to have a control group?

Back

A control group is important because it provides a baseline to compare the results of the experimental group, helping to isolate the effect of the independent variable.

Front

What is an example of a controlled variable in a sleep study?

Back

An example of a controlled variable in a sleep study could be the place where participants sleep, as it should be kept constant for all subjects.

Front

What is the difference between independent and dependent variables?

Back

The independent variable is what you change in an experiment, while the dependent variable is what you measure as a response to that change.

Front

What happens if you change more than one variable in an experiment?

Back

If you change more than one variable, it becomes difficult to determine which variable caused any observed changes in the dependent variable.

Front

What is the role of constants in an experiment?

Back

Constants are conditions that are kept the same throughout the experiment to ensure that the test is fair and results are valid.