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nces.ed.gov/nceskids/help/user_guide/graph/whentouse.asp

. . . a Pie Chart. Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time.. . . a Bar Graph. Bar graphs are used to compare things between different groups or to track changes over time. However, when trying to measure change over time, bar graphs are best when the changes are larger.

sciencing.com/difference-bar-graph-pie-chart-5832998.html

Bar graphs have a wide range of uses, many more than pie charts. The flexibility of a bar chart allows you to use it to present percentages, totals, counts and many other things, provided you can find a reasonable way to group the contents of the x-axis, whether by category or by time (e.g., one bar per year or per month).Unless you have a specific reason to choose a pie chart, then a bar ...

peltiertech.com/bar-graphs-vs-pie-charts

In Bar graphs vs. Pie charts, Seth further explains his comments about bar charts: [T]he purpose of a chart or graph is to make one point, vividly. I think we’re in agreement on this point. Seth mentioned non-scientists, so I guess another underlying theme is “don’t make them think about this information”.

chartio.com/.../what-is-the-difference-between-a-pie-chart-and-a-bar-chart

What is the Difference Between a Pie and Bar Chart Data Tutorial Dashboards and Charts. Pie charts and bar charts are two of the most common charts used for visualizing data. This tutorial will explain what they are and when to use them. What are Bar Charts and Pie Charts? A bar chart, or bar graph, is a very common two-dimensional data ...

www.edrawsoft.com/chart/difference-bar-pie-chart.php

Bar Charts Vs. Pie Charts - Usage Difference. For the reason that information on a bar chart can extend vertically and horizontally with no limitations, bar charts can hold both data in discrete categories and data of one category in different periods.

www.reference.com/math/difference-between-chart-graph-8775a512630cf520

Pie charts are the most common type of chart. Charts are used primarily in presentations for businesses and debates. The difference between charts and graphs are frequently misunderstood because of the similarities in their terms. Graphs and charts both tend to have labels and legends, and the term "graph" is sometimes used in relation to the ...

Pie charts look cooler than other kinds of charts. They're based on pie, after all, and seem less accountant-like than bars, bubbles, and lines. ... then a pie chart works better than a bar graph. ...

hypsypops.com/pie-chart-donut-chart

Even if a comparison isn’t your goal and has nothing to do with the graph’s core message, comparing sizes is sort of automatic behavior when you see a pie chart. If you do want the reader to compare segments, other types of graphs are better (bar and donut, especially).