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MATLAB for Machine Learning by Giuseppe Ciaburro

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Box plots

A box plot, also referred to as a whiskers chart, is a graphical representation used to describe the distribution of a sample by simple dispersion and position indexes. A box plot can be represented either horizontally or vertically by means of a rectangular partition divided by two segments. The rectangle (box) is delimited by the first quartile (25th percentile) and the third quartile (75th percentile), and divided by the median (50th percentile), as shown in the following figure:

Figure 3.17: Statistical descriptors of a box plot

Segments outside the box (whiskers) represent the minimum and maximum of the sample. In this way, ...

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