Independent and Dependent Variables

"The more time people spend using social media, the less able they are to express themselves in conversation." Identify the Independent Variable and Dependent Variable.

"Taking a nap in the afternoon makes people more relaxed and less irritable for the rest of the day." Identify the Independent Variable and Dependent Variable.

"Spending time with a cat or dog decreases the amount of stress someone is feeling and allows them to perform better on tests." Identify the Independent Variable and Dependent Variable.

Students watched a cartoon either alone or with others and then rated how funny they found the cartoon to be. The independent variable is _____ and the dependent variable is _____.

"Drinking energy drinks makes people more aggressive." Identify the Independent Variable and Dependent Variable.

"Eating breakfast in the morning increases the ability to learn in school." Identify the Independent Variable and Dependent Variable.

Catherine is testing which soil will help grass grow the tallest.  The height of the grown grass is the __ variable.

• constant (stays the same)

• independent (it's what you change)

• dependent (it's what you measure)

What would the INDEPENDENT variable be in an experiment testing which  paper airplane design goes furthest?

• the paper used

• the paper airplane design

• the distance of each plane's flight

• how hard the plane is thrown

When experimenting with plants to see if they grow better with or without fertilizer, a scientist uses six bean plants and one type of fertilizer. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

• Compound

Students took a test after they had studied either in silence or with the television turned on. What is the dependent variable?

• silence

• television turned on

• score on test

• subject