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A farmer applies different fertilizer to his cotton crops, to see which will make his plants grow the highest. What is the IV?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
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?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
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?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
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?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
How many independent variables can you have in an experiment?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
The independent variable is the variable that you change.
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
The dependent variable is the variable that you change.
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
I use different types of weed killers on my lawn to see which one kills the most weeds. What is the DV?
Amount of weeds killed
Amount of time until pain was relieved
Types of pain reliever
Type of fertilizer
False
1
Amount of time before death
True
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