Identifying Independent and Dependent Variables

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Drinking Red Bull increases hyperactivity in children

IV: Red Bull consumption DV: rate of hyperactivity

UV light decreases the growth of mold

IV: UV light DV: mold growth

People will become shy if they are in a crowd

IV: crowd (number of people around) DV: shyness

Eating sugar impairs performance on a memory task

IV: eating sugar DV: memory level

More sleeps help students move to class more quickly

IV: hours of sleep DV: time it takes for students to get to class

Eating lemons causes students to have higher test scores

IV: lemon consumption DV: test scores

Having longer football practice increases touchdowns during games

IV: length of football practice DV: number of touchdowns during games

Listening to a radio broadcast of a sports event while studying for a test decreases performances on the test

IV: listening to a radio DV: test performance

Smoking cigarettes while driving a car increases lung cancer

IV: smoking cigarettes DV: rate of lung cancer

Too much stress causes stomach aches

IV: stress level DV: rate of stomach aches


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