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Question #9: The box-and-whisker plots below show the mean monthly

temperatures (°F) for Mexico City, Mexico, and Shanghai, China. What
percent of the temperatures for Shanghai fall between 46°F and 78°F?

Question #9: The box-and-whisker plots below show the mean monthly temperatures (°F-example-1
User Jokuskay
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2 Answers

5 votes

Answer: 50%

Explanation:

User Deneen
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1 vote

The answer is that between 50% of the temperatures in Shanghai fall between 46°F and 78°F.

Identify the relevant quartiles:

The bottom whisker of the Shanghai boxplot extends to 39°F, representing the 25th percentile (Q1).

The top whisker extends to 82°F, representing the 75th percentile (Q3).

Calculate the interquartile range (IQR):

IQR = Q3 - Q1 = 82°F - 39°F = 43°F

Identify the desired range:

We are interested in the percentage of temperatures between 46°F and 78°F.

Compare the desired range to the IQR:

78°F falls within the IQR (between Q3 and the upper whisker).

46°F falls below Q1 and the lower whisker.

Estimate the percentage:

Since 46°F falls outside the IQR and 78°F falls within the upper whisker, we can estimate that more than 50% but less than 75% of the temperatures in Shanghai fall between 46°F and 78°F.

Therefore, the answer is that between 50% of the temperatures in Shanghai fall between 46°F and 78°F.

User Daniel Earwicker
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