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Explanation Of Box Plots. Some general observations about box plots. This region is called as InterQuartile Range - IQR. In a box plot we draw a box from the first quartile to the third quartile. A box and whisker plot also known as a box plot is a graph that represents visually data from a five-number summary.
The first variant is the variable width box plot which can be seen in Figure 4a. It makes comparing characteristics of data between categories very easy. Construct a box plot for the following data. Box plots are used to show overall patterns of response for a group. C Variable width notched box plot. Box limits indicate the range of the central 50 of the data with a central line marking the median value.
For example the following boxplot of the heights of students shows that the median height is 69.
How to create a box plot. Box plots are a type of graph that can help visually organize data. There are many graphical methods to summarize data like boxplots stem and leaf plots scatter plots histograms and probability distributions. In a box plot we draw a box from the first quartile to the third quartile. The five-number summary is the minimum first quartile median third quartile and maximum. C Variable width notched box plot.