On a boxplot, an observation is classified as an outlier if
A.
it is smaller than \(\bar{X}-3 S\) or larger than \(\bar{X}+3 S\)
B.
it is larger than \(\bar{X}-3 S\) and smaller than \(\bar{X}+3 S\)
C.
it is smaller than \(Q_{1}\) or larger than \(Q_{3}\)
D.
it is smaller than \(Q_{1}-1.5 \mathrm{IQR}\) or larger than \(Q_{3}+1.5 \mathrm{IQR}\)
E.
it is larger than \(Q_{1}-1.5 \mathrm{IQR}\) and smaller than \(Q_{3}+1.5 \mathrm{IQR}\)
Exam No：AP Statistics Problem Set 11 Year：2024 Question No：APStatistics2024AP0445
Answer:
D
Knowledge points:
1.6 Describing the Distribution of a Quantitative Variable
1.7 Summary Statistics for a Quantitative Variable
1.8 Graphical Representations of Summary Statistics
Solution:
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