Calculating Range and Quartiles
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Objective
I can calculate and interpret the five number summary, range, and interquartile range of a data set.
Part 1 of 3
Key concepts
3 concepts
- 1
The five-number summary includes the minimum value, first quartile (Q1), median (Q2), third quartile (Q3), and maximum value.
- 2
The quartiles divide a data set into four equal parts, where Q1 is the 25th percentile, Q2 is the 50th percentile, and Q3 is the 75th percentile.
- 3
The range is the difference between the maximum and minimum values, while the interquartile range (IQR) is the difference between Q3 and Q1.
Part 2 of 3
Practice
12 questions
Which of the following sets of values correctly identifies the five-number summary for a dataset?
Explain what Q1, Q2, and Q3 represent in a data set.
Part 3 of 3
Exit ticket
Quick comprehension check
“Calculate the five-number summary, range, and interquartile range for the following data set: 12, 15, 18, 20, 22, 25, 28, 30, 35, 40”
Sample answer included in the free materials
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