Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
3. Adding Rational Numbers
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Exercise 9 Page 21

The range is the difference between the greatest and least value.

D

Practice makes perfect
We want to find the range of the given data set. Let's start by ordering the numbers. 12, 8, 17, 12, 15, 18, 30 ⇕ 8, 12, 12, 15, 17, 18, 30

The range is the difference between the greatest and least values in a set of data. We can identify these values in out data set. 8, 12, 12, 15, 17, 18, 30 In this case, the greatest value is 30 and the least value is 8. Range: 30- 8=22 The range of the numbers is 22. This result corresponds to answer D.