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Question 71 - CBDA discussion

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DIAGRAM

Year-over-Year Sales

300

200

A.
The medians and the inter-quartile range is the same in each group
Answers
A.
The medians and the inter-quartile range is the same in each group
B.
The medians and the inter-quartile ranges are different in each group
Answers
B.
The medians and the inter-quartile ranges are different in each group
C.
The medians are the same but the inter-quartile ranges are not
Answers
C.
The medians are the same but the inter-quartile ranges are not
D.
The inter-quartile ranges are the same but the medians are not
Answers
D.
The inter-quartile ranges are the same but the medians are not
Suggested answer: B

Explanation:

Explanation: According to the Guide to Business Data Analytics, a boxplot is used to provide a visual summary of one or more groups of data values through their quartiles. In this case, the boxplot shows two different years, 2017 and 2018, with distinct medians and interquartile ranges. The median is represented by the line inside the box, while the interquartile range is represented by the height of the box itself. Outliers are marked with circles above and below the box. From the boxplot, we can see that the median sales for 2018 are higher than the median sales for 2017, and the interquartile range for 2018 is narrower than the interquartile range for 2017. This means that the sales for 2018 are more concentrated around the median and have less variability than the sales for 2017. Therefore, the correct answer is B.

asked 18/09/2024
William Takashi Chan
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