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Box And Whisker Diagrams. In its simplest form the box and whisker diagram has a box showing the range from first to third quartiles and the median divides this large box the interquartile range into two boxes for the second and third quartiles. Tukey used to show the distribution of a dataset at a glance. It is also used for descriptive data interpretation. A box and whiskers diagram is also known as box plot it displays a summary of a set of data.
Box plot box and whisker diagram is a great way to display distribution of a continuous eg interval data variable. Box plots may also have lines extending from the boxes indicating variability outside the upper and lower quartiles hence the terms box-and-whisker plot and box-and-whisker diagram. Box plots are non-parametric. Two or more data can be compared. Begin Lesson Download Worksheet. The box and whisker plot displays how the data is spread out.
The diagram shows the quartiles of the data using these as an indication of the spread.
A box and whiskers diagram is also known as box plot it displays a summary of a set of data. In most cases a histogram analysis provides a sufficient display but a box and whisker plot can provide additional detail while allowing multiple sets of data to be displayed in the same graph. Begin Lesson Download Worksheet. The whiskers are straight line extending from the ends of the box to the maximum and minimum values. Two or more data can be compared. These plots contain the range interquartile range median lower value upper value lower quartile and upper.