Some Implementations of the Boxplot

An increasing number of statistical software packages offer exploratory data displays and summaries. For one of these, the graphical technique known as the boxplot, a selective survey of popular software packages revealed several definitions. These alternative constructions arise from different choi...

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Veröffentlicht in:The American statistician 1989-02, Vol.43 (1), p.50-54
Hauptverfasser: Frigge, Michael, Hoaglin, David C., Iglewicz, Boris
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container_title The American statistician
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creator Frigge, Michael
Hoaglin, David C.
Iglewicz, Boris
description An increasing number of statistical software packages offer exploratory data displays and summaries. For one of these, the graphical technique known as the boxplot, a selective survey of popular software packages revealed several definitions. These alternative constructions arise from different choices in computing quartiles and the fences that determine whether an observation is "outside" and thus plotted individually. We examine these alternatives and their consequences, discuss related background for boxplots (such as the probability that a sample contains one or more outside observations and the average proportion of outside observations in a sample), and offer recommendations that lead to a single standard form of the boxplot.
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source Jstor Complete Legacy; Periodicals Index Online; JSTOR Mathematics & Statistics
subjects Computer software
Data analysis
Exact sciences and technology
Exploratory data analysis
Fences
General topics
Integers
Mathematics
Numerical analysis
Numerical analysis. Scientific computation
Outliers
Quantiles
Quartiles
Sample size
Sciences and techniques of general use
Software
Software packages
Statistical Computing
Statistical median
Statistical software
Statistics
Tiles
title Some Implementations of the Boxplot
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