Question

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The box plot shows the ages of people at a movie screening. What percent of the people are between 20 and 37 years old?
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10 15 20 25 30 35 40 45
between 20 and 37 =
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Answer 1

50%

Explanation:

The percentage of people between 20 and 37 years old.

From the attached box plot :

Number of people aged up to 20 marks the lower quartile of the distribution = lower 25%

Number of people aged up to 37 marks the upper quartile of the distribution = lower 75%

Hence, percentage number of people aged between 20 and 37 equals

Q3 - Q1 = 75% - 25% = 50%