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  3. Which of the following is closest to the average(arithmetic mean)number of cardinal sightings for the 4 seasons?

Which of the following is closest to the average(arithmetic mean)number of cardinal sightings for the 4 seasons?

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问题 Which of the following is closest to the average(arithmetic mean)number of cardinal sightings for the 4 seasons?
选项 A、12
B、14
C、16
D、18
E、20
答案E
解析 The average(arithmetic mean)number of cardinal sightings for the 4 seasons is, or 19.75. Of the answer choices given, 20 is closest to 19.75.
Thus the correct answer is Choice E.
This explanation uses the following strategies.
Strategy 4: Translate from a Figure to an Arithmetic or Algebraic Representation
Strategy 9: Estimate
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