What is the median of number of hurricanes per decade?
Correct answer: C. 15
- A. 15.29
- B. 15.5
- C. 15
- D. 17
Explanation
The median is the middle value in a set of data. First, organize and order the data from smallest to largest. To find the midpoint value, divide the number of observations by two. If there are an odd number of observations, round that number up, and the value in that position is the median.1950s →20 hurricanes1960s →15 hurricanes1970s →12 hurricanes1980s →17 hurricanes1990s →15 hurricanes2000s →19 hurricanes2010s →09 hurricanesArranging them in order:9, 12, 15, 15, 17, 19, 20Median:(7+1)/2=4th term=15Therefore, the answer is C.
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About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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