![]() ![]() See also interquartile range and quartiles. Values higher than Q3+1.5xIQR or lower than Q1-1.5xIQR are considered outliers and are plotted above the top whisker or below the bottom whisker. The ends of the whiskers are marked by two shorter horizontal lines. The vertical lines protruding from the box extend to the minimum and the maximum values of the data set, as long as these values are not outliers. The horizontal line inside the box is the median. Therefore the vertical width of the central box represents the inter-quartile deviation. The bottom side of the box represents the first quartile, and the top side, the third quartile. The box plot is also referred to as box and whisker plot or box and whisker diagram Elements of the box plot What is a box plotĪ box plot is a diagram that gives a visual representation to the distribution of the data, highlighting where most values lie and those values that greatly differ from the norm, called outliers. These measures are displayed to the left of the chart.For more details on the dispersion of the data set, you may click on the More dispersion data link located on the left of the plot. the range) with the quartiles into on useful graph. When you submit your data, the server calculates the measures that will be used to plot the diagram. The Box Plot, sometimes also called 'box and whiskers plot', combines the minimum and maximum values (i.e. Sometimes, the mean is also indicated by a dot or a cross on the box. The vertical line that splits a Box and Whisker Plot in two is the median. The box covers the interquartile interval, where 50 of the data lie. To clear the graph and enter a new data set, press "Reset". The left and right sides of a Box and Whisker Plot example are the lower and upper quartiles, respectively. Press the "Submit Data" button to create the plot.You may also copy and paste data from another window such as an open document, spreadsheet pdf file or another web page. You do not need to specify whether the data is from a population or a sample. ![]() Individual values may be entered on separate lines or separated by commas, tabs or spaces. You must enter at least 4 values to build the box plot. This page allows you to create a box plot from a set of statistical data: ![]()
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