Share Independent & Dependent Variables
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A student waters one plant with salt water and another with fresh water to see which grows taller.
IV: Type of water (salt or fresh) DV: Plant growth (height)
A teacher gives one group of students 5 hours of study time and another group 2 hours to see who scores higher on a test.
IV: Study time (5 hours vs. 2 hours) DV: Test scores
A baker bakes cookies at different oven temperatures to see how many minutes they take to bake.
IV: Oven temperature DV: Baking time of cookies
A scientist changes the type of soil to test how tall the bean plants grow.
IV:
Type of soil
DV: Plant height
A runner trains using three different types of shoes to see which helps him run faster.
IV: Type of shoes DV: Running speed/time
A farmer uses different amounts of fertilizer on crops to measure how many tomatoes are produced.
IV: Amount of fertilizer DV: Number of tomatoes produced
A class plays music while students study to see if it affects their quiz scores.
IV: Studying with or without music DV: Quiz scores
A student tests if the size of a paper airplane affects how far it flies.
IV: Size of paper airplane DV: Distance it flies
A cook changes the amount of sugar in lemonade to test how sweet people rate it.
IV: Amount of sugar in lemonade DV: Sweetness rating
A researcher feeds one group of mice more food than another to see which group gains more weight.
IV: Amount of food given to mice DV: Mouse weight
A teacher uses different colored paper for spelling tests to see if students do better.
IV: Color of paper for spelling tests DV: Test performance
A student changes the type of ball (basketball, soccer ball, tennis ball) to see which bounces the highest.
IV: Type of ball DV: Bounce height
A scientist changes the type of liquid (water, milk, soda) to see how much it rusts a nail.
IV: Type of liquid (water, milk, soda) DV: Amount of rust on nail
A gardener tests whether plants grow taller in sunlight or shade.
IV: Location (sunlight or shade) DV: Plant growth (height)
A student changes the number of hours of sleep before a test to see how it affects scores.
IV: Hours of sleep DV: Test scores
A car company tests different amounts of air in tires to see how far a car can travel on one gallon of gas.
IV: Amount of air in tires DV: Distance traveled on one gallon of gas
