Concept explainers
The false statement regarding the box-and-whisker plot.
Answer to Problem 18STP
The answer is: D.
Explanation of Solution
Given:
This is the given information:
The quiz scores for 25 students.
Asterisks are used to indicate outliers. Since, asterisks are used for score 16, this is essentially an outlier. Therefore, option A is correct. Median divides the box into two parts. Therefore, median is located at 6. Thus, option C is also correct. Note, that box and whisker plot separate the data into four parts excluding outlier. The distance between minimum and lower quartile comprise 25%, lower quartile to median comprises 25%, median to upper quartile comprises 25% and upper quartile to maximum comprises 25%. Based on this information, 75% of data is less than or equal to 9. Thus, option B is also correct. Based on the same information it seems that 50% of scores lie between 6 and 11 and 50% of scores lie between 3 and 6. Thus, option D is not correct.
Therefore, the answer is: D.
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