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. Plot quantitative data with ranges of the histogram is a graphical display data Rainfall, yearly population, human index etc can be given in histogram. The horizontal line inside the box is the median. Therefore the vertical width of the central box represents the inter-quartile deviation. Class B has more scores in the 70s than class A.
The stem is used to group the scores and each leaf shows the individual scores within each group A quick look at the graph and you will see that class A performed a lot better than class B. The bottom side of the box represents the first quartile, and the top side, the third quartile. The stem values are listed down, and the leaf values go right (or left) from the stem values. 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. When you submit your data, the server calculates the measures that will be used to plot the diagram. To clear the graph and enter a new data set, press "Reset". Press the "Submit Data" button to create the plot.
#Shodor histogram maker pdf
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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