Study

Independent & Dependent Variables

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  • 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
  • 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 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 student tests whether the temperature of water affects how fast sugar dissolves.
    IV: Temperature of water DV: Time sugar takes to dissolve
  • 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 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 teacher tries three different teaching methods to see which results in the highest student grades.
    IV: Teaching method DV: Student grades
  • 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 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 runner eats different breakfasts (eggs, cereal, no breakfast) to see which gives the most energy.
    IV: Type of breakfast (eggs, cereal, none) DV: Energy level
  • 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 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 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 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 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 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 adds different amounts of vinegar to baking soda to measure how high the bubbles rise.
    IV: Amount of vinegar added to baking soda DV: Height of bubbles
  • A gardener tests whether plants grow taller in sunlight or shade.
    IV: Location (sunlight or shade) DV: Plant growth (height)
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