Visualization Box plot

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figure 5. boxplot , probability density function (pdf) of normal n(0,1σ) population


the box plot quick way of examining 1 or more sets of data graphically. box plots may seem more primitive histogram or kernel density estimate have advantages. take less space , therefore particularly useful comparing distributions between several groups or sets of data (see figure 1 example). choice of number , width of bins techniques can heavily influence appearance of histogram, , choice of bandwidth can heavily influence appearance of kernel density estimate.


as looking @ statistical distribution more commonplace looking @ box plot, comparing box plot against probability density function (theoretical histogram) normal n(0,1σ) distribution may useful tool understanding box plot (figure 5).







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