Independent and Dependent Variables Lesson

By Sherri Christensen

Labelling

Label the graph.

Drag labels to their correct position on the image

Dependent Variable

Independent Variable

Multiple Choice

In a study to determine whether how long a student sleeps affects test scores. What is the independent variable?

• the test scores

• the amount of sleep

Multiple Choice

You suspect the amount of television a person watches is related to their age. What is the dependent variable?

• age

• the amount of tv time

Multiple Choice

You want to know which brand of fertilizer is best for your plants. What is the independent variable?

• the fertilizer

• the health of your plants

Multiple Choice

You want to compare brands of paper towels, to see which holds the most liquid. Which is the independent variable?

• the brand of paper towel

• the amount of water

Multiple Choice

You think rising sea temperatures might affect the amount of algae in the water.

What is the dependent variable?

• the water temp

• the amount of algae

Hotspot

Graph the points of the ordered pairs:

(1, 45)

(2, 90)

(3, 135)

(4, 180)

Hotspot

Graph the ordered pairs:

(1, 20)

(2, 40)

(3, 60)

(4, 80)

Multiple Choice

The Independent Variable is represented on which axis?

• X
• Y

Multiple Choice

The dependent Variable is represented on which axis?

• X
• Y

Multiple Choice

What is the independent variable in an experiment?

• the thing we change or test
• what we measure in the end

Multiple Choice

What is the dependent variable in an experiment? 

• the thing we change or test
• the thing we measure in the end

Multiple Choice

What is the dependent variable in this graph?

• Growth (cm)
• Hours

Multiple Choice

Changes in the _________ variable causes changes in the _________ variable.

• independent; dependent
• dependent; independent

Multiple Choice

What is meant by the ordered pair (3, 300) ?

• In 3 months, I made $300
• In 3 months, $300 was raised for the science fair
• In 300 months, $3 was made

Multiple Choice

What is the relationship between the variables in the chart?

• As the pH of the soil increases, then the average plant growth (cm) decreases.

• As the average plant growth changes, then the pH of the soil increases.

Multiple Choice

How many games were played in 2001?

• 4

• 5

• 7

Multiple Choice

Which day did Brody receive exactly 5 text messages?

• Monday

• Thursday

• Friday

Multiple Choice

This best-fit line graph shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 18 chapters
• 21 chapters