PS-0.2: 3 Kinds Of Variables Question Preview (ID: 1956)


Define, Differentiate Between IV, DV, And Controlled Variables. TEACHERS: click here for quick copy question ID numbers.

The variable that the experimenter deliberately changes is the
a) dependent variable (DV)
b) control group
c) controlled variable
d) independent variable (IV)

The variable that changes in response to the manipulated variable is the
a) dependent variable
b) control group
c) controlled variable
d) independent variable

A variable that is held constant in an investigation (not changed) is a
a) dependent variable
b) control group
c) controlled variable
d) independent variable

Name the dependent variable: Sam investigates the effect of temperature on movement in fish.
a) Sam
b) water level
c) movement in fish
d) temperature

Name the independent variable: Jen investigates the effect of age on hearing acuity.
a) Jen
b) hearing acuity.
c) age
d) volume of sound

Name a controlled variable: Ben investigates the effect of hours of sleep on test scores in 9th graders
a) Ben
b) hours of sleep
c) test scores
d) 9th graders

Name the independent variable: Sue tests the effect of concentration of carbon dioxide on acidity of pond water.
a) Sue
b) acidity of pond water
c) concentration of carbon dioxide
d) temperature of water

If the independent variable is the cause, the dependent variable is the
a) effect
b) manipulator
c) starting point
d) first event

Name the dependent variable: Joe tested the effect of concentration of oxygen in the air on breathing rates in athletes.
a) Joe
b) altitude of sports arenas
c) breathing rates in athletes
d) concentration of oxygen in air

Name a controlled variable: Lee tested the effects of exercise on heart rate in ballet dancers.
a) Lee
b) exercise
c) heart rate
d) ballet dancers

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