Quartiles Worksheet

A worksheet for 8th-grade students covering quartiles, interquartile range, and data distribution.

Grade 8 Math Probability and StatisticsQuartiles

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Includes

Fill in the Blanks2 Short AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.HSS.ID.A.1CCSS.MATH.CONTENT.HSS.ID.A.2CCSS.MATH.CONTENT.HSS.ID.A.3

Topics

mathgrade 8quartilesstatisticsdata analysis

7 sections · Free to use · Printable

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Quartiles & Data Distribution

Name:

Date:

Score:

Read each question carefully and provide your answers in the spaces provided. Show all your work where applicable.

1. Quartiles divide a data set into equal parts.

2. The quartile is also known as the median.

3. The interquartile range (IQR) is the difference between the quartile and the quartile.

4. For the following data set: 12, 15, 18, 20, 22, 25, 28, 30, 32, find the first quartile (Q1), the second quartile (Q2), and the third quartile (Q3).

5. Given the data set: 5, 8, 10, 12, 15, 18, 20, 22, 25, 28, calculate the Interquartile Range (IQR).

6. Which of the following is NOT a quartile?

7. What does a large Interquartile Range (IQR) indicate about a data set?

The data is closely clustered.

The data is widely spread out.

The data has no outliers.

The mean and median are the same.

8. The median is always the same as the second quartile (Q2).

True

False

9. Outliers are data points that fall within the Interquartile Range.

True

False

10. The following numbers represent the scores of students on a math test: 65, 70, 72, 75, 78, 80, 82, 85, 88, 90, 92, 95. Construct a number line and mark Q1, Q2, and Q3 on it.