Problem-Solving and Data AnalysisEasy–MediumRange after adding a value
Problem-Solving and Data Analysis practice question
The data set 3, 9, 4, 7 has the value 12 added to it. What is the range of the new data set?
Answer: 9
The new set is 3, 9, 4, 7, 12. Range = largest − smallest = 12 − 3 = 9.
Common wrong answers
- If you answered 6
- 6 is the range of the ORIGINAL set (9 − 3), before 12 was added.
- If you answered 8
- 8 is 12 − 4, using the wrong smallest value; the smallest is 3.
- If you answered 12
- 12 is the largest value, not the range.
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