What is the mode of this data set?
Correct answer: A. 15
- A. 15
- B. 11
- C. 16
- D. 17
Explanation
The mode is the value that appears most often in a set of data values.1950s →20 hurricanes1960s →15 hurricanes1970s →12 hurricanes1980s →17 hurricanes1990s →15 hurricanes2000s →19 hurricanes2010s →09 hurricanesArranging them in order:9, 12, 15, 15, 17, 19, 20As we can clearly see, the value that appears more often is 15. It appears twice. The rest of the values appear once. Therefore, the mode is 15. Option A is the answer.
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Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.
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