#WHAT IS A BOX AND WHISKER PLOT HOW TO#

The centre of distribution A is the lowest of the three distributions (median is 0.11).

The information is grouped by Measurement (appearing as row headers), Distribution A, Distribution B and Distribution C (appearing as column headers). This table displays the results of Data table for chart 4.5.2.1. Example 1 вЂ“ Comparison of three box and whisker plots Data points that are outside this interval are represented as points on the graph and considered potential outliers. That is, the whisker reaches the value that is the furthest from the centre while still being inside a distance of 1.5 times the interquartile range from the lower or upper quartile. The box and whisker plot can be presented horizontally, like in figureВ 4.5.2.1, or vertically.ДЄ variation of the box and whisker plot restricts the length of the whiskers to a maximum of 1.5 times the interquartile range.The graph is usually presented with an axis that indicates the values (not shown on figureВ 4.5.2.1).The whiskers are the two lines outside the box, that go from the minimum to the lower quartile (the start of the box) and then from the upper quartile (the end of the box) to the maximum.Sometimes, the mean is also indicated by a dot or a cross on the box plot. The vertical line that split the box in two is the median.The box covers the interquartile interval, where 50% of the data is found. The left and right sides of the box are the lower and upper quartiles.The figure shows the shape of a box and whisker plot and the position of the minimum, lower quartile, median, upper quartile and maximum.

#WHAT IS A BOX AND WHISKER PLOT HOW TO#

A box plot is ideal for comparing distributions because the centre, spread and overall range are immediately apparent.ДЇigureВ 4.5.2.1 shows how to build the box and whisker plot from the five-number summary. It doesnвЂ™t show the distribution in as much detail as histogram does, but itвЂ™s especially useful for indicating whether a distribution is skewed and whether there are potential unusual observations (outliers) in the data set. The box and whisker plot, sometimes simply called the box plot, is a type of graph that help visualize the five-number summary.

What is a box and whisker plot