A doctor gave the same patient, different numbers of pills each day, the doctor measured the level of histamine (chemical) in his body. Determine the independent variable.
Number of pills
A doctor gave the same patient, different numbers of pills each day, the doctor measured the level of histamine (chemical) in his body. Determine the dependent variable.
Level of histamine
A student wants to investigate the effect of different liquids on the height of the plant. Determine the independent variable.
Type of liquid
A student wants to investigate the effect of different liquids on the height of the plant. Determine the dependent variable.
Height of plant (cm)
A student wants to investigate the effect of different liquids on the height of the plant. State 2 variables that should be controlled.
Any two: (Type of soil, volume of liquid, intensity of light, type of plant)
A student wants to find out if sleeping more would affect his test scores. Identify the independent variable.
Sleeping hours
A student wants to find out if sleeping has an effect on his test scores. Identify the dependent variable.
Test score
A study was done to find if different tire treads affect the braking distance of a car. Identify the independent variable
Tire tread
