Independent and dependent variable

Athletes who do not get enough sleep the night before will not run as fast the next day

Independent variable : amount of sleep Dependent variable : how fast they run

People who are exposed to asbestos have a greater incidence of mesothelioma

Independent variable : asbestos exposure Dependent variable : # having mesothelioma

Hikers who wear light weight boots can hike more house that hikers who wear heavy boots

Independent variable : boots Dependent variable : # miles hiked

At risk children who attend head start get better grades in reading in second grade

Independent variable : head start Dependent variable : grades

Children who take asthma medication have fewer asthma attacks

Independent variable : medicine Dependent variable : # asthma attacks

Knee replacement patients who participate in physical therapy can climb stairs three days after surgery

Independent variable : patients attend physical therapy Dependent variable : how fast recovery

People who smoke cigarettes have a higher incidence of lung cancer

Independent variable : smoking Dependent variable : lung cancer

Hot water dissolves more sugar than cold water

Independent variable : temperature of water Dependent variable : amount sugar dissolved

Puppies that are given vitamins gain more weight

Independent variable : vitamins Dependent variables : weight

Sunflowers that get more water grow over six feet tall

Independent variable : water Dependent variable : height of sunflower

Plants that get regular watering grow taller

Independent variable : water Dependent variable : plants growth.

If I study my Cornell notes 3 times a week then I will score higher on my socrative quizzes.

Independent: amount of time spent studying Dependent: Score on socrative quiz