1.3 Review

Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the independent variable 

• Type of fertilizer
• Size of sunflower
• type of sun flower

Steve wanted to see if the type of fertilizer made sunflowers grow larger. What is the dependent variable 

• Type of fertilizer
• Size of sunflower
• Type of sunflower

Molly investigated if the age of students caused them to be better drivers. What is the independent variable?

• Type of car
• Skill of driving
• Age of student

Molly investigated if the age of students caused them to be better drivers. What is the dependent variable?

• Type of car
• Skill of driving
• Age of student

Sam wanted to know if the color of the chair you sat in when taking a test affected your test grade. What is the dependent variable.

• Color or chair
• Grade on test
• Age of students

This variable in an experiment is the one being deliberately changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

The higher the temperature of water, the faster the egg will cook.  Select the independent variable.

• Faster Egg Cooks
• Higher Temperature

Carey and Justin are raising money to purchase books for the library. The more money they raise, the more books they will be able to purchase for the library.

Which of the variables is dependent?

• amount of money raised

• number of books

A(n) _____________ variable depends on or is changed by another variable.

• dependent
• independent

How long you sleep affects your test score. Identify the dependent variable.

• length of sleep

• test score