![]() See also: Dataviz expert Ann Emery's Pie Chart Guidelines. Become cluttered and dense as categories are added.Difficult to compare relative size of slices.Excel can calculate % values automatically In this project, you will learn how to create charts in Microsoft Excel to analyze sales data of a.Can be read "at a glance" with limited categories.The human eye has trouble comparing the relative size of slices in a pie chart, so pie charts should also be avoided when slices are similar, unless similarity is the point. Pie charts should be avoided when there are many categories, or when categories do not total 100%. ![]() For example, survey questions in yes/no format, data split by gender (male/female), new and returning visitors to a website, etc. Pie charts work best to display data with a small number of categories (2-5). Pie charts are meant to express a "part to whole" relationship, where all pieces together represent 100%. The Pie Chart is a primary chart type in Excel.
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