A farmer applies different fertilizer to his cotton crops to see which will make his plants grow the highest. What is the IV?

A farmer applies different fertilizer to his cotton crops to see which will make his plants grow the highest. What is the dependent variable?

I use different types of weed killers on my lawn to see which one kills the most weeds. What is the DV?

I use different types of weed killers on my lawn to see which one kills the most weeds. What is the IV?

In a study about headaches, doctors gave patients Alieve, Tylenol, Advil, and Excedrin to see which medication would relieve the headache pain the fastest. The doctors timed how long it took the medication to work. What is the IV?

In a study about headaches, doctors gave patients Alieve, Tylenol, Advil and Excedrin to see which medication would relieve the headache pain the fastest. The doctors timed how long it took the medication to work. What is the DV?

To test the safety of a car crash, tests will test different types of cars in collision situation. They want to determine in which car the crash test dummy receives the least amount of damage. What is the DV?

To test the safety of a car crash, tests will test different types of cars in collision situations. They want to determine in which car the crash test dummy receives the least amount of damage. What is the IV?

A scientist wanted to determine the color flower that bees are most attracted to. She placed different colors if the same type of flower near each other and counted the number of bees that visited each flower color. What is the IV?

A scientist wanted to determine the color flower that bees are most attracted to. She placed different colors of the same type of flower near each other and counted the number of bees that visited each flower color. What is the DV?

Scientists wanted to determine the levels of pollution that a fish could withstand. They placced fish in tanks with differing pollution levels and timed how long they could live under those conditions. What is the IV?

Scientists wanted to determine the levels of pollution that a fish could withstand. They placed fish in tanks with differing pollution levels and timed how long they could live under those conditions. What is the DV?

The independent variable is the one you measure.

The independent variable is the variable that you change.

How many independent variables can you have in an experiment?

The dependent variable is the variable that you measure.

The dependent variable is the variable that you change.

How many dependent variable(s) can you have in an experiment?

What is another name for independent variable?

What is another name for dependent variable?

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