![]() ![]() How to Make a Box and Whiskers Chart in Excel: Steps Note: This is an advanced Excel technique, so if you are new to Excel you may want to watch the video, which has more information and visuals for each step to make a box and whiskers chart in Excel. This is a little more time-consuming than inserting a simple graph, but it you will end up with a great looking box and whiskers graph. Watch this video on How to Make a Box and Whiskers Chart in Excel.Įxcel does not have a box and whiskers “Insert Graph” function, so you have to build one using stacked bar charts. Back to Top How to Make a Box and Whiskers Chart Excel Filled circles are used for known outliers.Ĭheck out our YouTube channel for hundreds of basic statistics videos. Small circles or unfilled dots are drawn on the chart to indicate where suspected outliers lie. If outliers are present, the whisker on the appropriate side is drawn to 1.5 * IQR rather than the data minimum or the data maximum. That’s how to read a box plot! Note on Outliers:ĭata sets can sometimes contain outliers that are suspected to be anomalies (perhaps because of data collection errors or just plain old flukes). Instead, the ends of the whiskers represent one and a half times the interquartile range (1.5*IQR).Īll done. For example, the above image shows a box and whiskers chart with the following information:Įxception: If your data set has outliers (values that are very high or very low and fall far outside the other values of the data set), the box and whiskers chart may not show the minimum or maximum value. You can easily read a boxplot to find the five number summary. The maximum is the end of the “whiskers”: in this graph, at approximately 16. Q3 is the far right hand edge of the box, at about 12 in this graph. In this boxplot, it can be found at about 6.5. The median is represented by the vertical bar. Q1 is represented by the far left hand side of the box. For this graph, the left whisker end is at approximately 0.75. The minimum is the far left hand side of the graph, at the tip of the left whisker. However, they can be a useful tool for getting a quick summary of data. Finally, the median is represented by a vertical bar in the center of the box.īox plots aren’t used that much in real life. The far left of the chart (at the end of the left “whisker”) is the minimum (the smallest number in the set) and the far right is the maximum (the largest number in the set). At the ends of the box, you” find the first quartile (the 25% mark) and the third quartile (the 75% mark). The main part of the chart (the “box”) shows where the middle portion of the data is: the interquartile range. The maximum (the largest number in the data set), shown at the far right of the box.Ī boxplot is a way to show a five number summary in a chart.Third quartile, Q 3, shown at the far right of the box (at the far left of the right whisker).The median is shown as a line in the center of the box.First quartile, Q 1, is the far left of the box (or the far right of the left whisker).The minimum is shown at the far left of the chart, at the end of the left “whisker.” The minimum (the smallest number in the data set).Five pieces of information (the “ five number summary“) are generally included in the chart: The box and whiskers chart shows you how your data is spread out. Measures of center include the mean or average and median (the middle of a data set). Measures of spread include the interquartile range and the mean of the data set. A boxplot, also called a box and whisker plot, is a way to show the spread and centers of a data set. ![]()
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