Which of the following plots indicates outliers?Answer choicesSelect only one optionREVISITA) HistogramB) Box plotC) Pie chartD) Bar chart
Question
Which of the following plots indicates outliers?Answer choicesSelect only one optionREVISITA) HistogramB) Box plotC) Pie chartD) Bar chart
Solution
The answer is B) Box plot.
A box plot (also known as a whisker plot) displays a summary of the range, quartiles, and median of a data set. It is a standardized way of displaying the distribution of data based on a five number summary (“minimum”, first quartile (Q1), median, third quartile (Q3), and “maximum”).
Outliers in a box plot are shown as dots or asterisks outside the box formed by Q1 and Q3 and whiskers (lines extending from the box indicating variability outside the upper and lower quartiles).
Histograms, pie charts, and bar charts do not typically indicate outliers in a data set.
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