# Why are graphs used in economics?

Many students who are new to economics become flustered when assessing a simple supply and demand graph. Despite their confusing appearance, graphs explain economics in a way that equations and wor... Read More »

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## What Are Bar Graphs Used for?

Bar graphs are used to compare the relationship between two variables, usually independent and dependent, over a period of time. They are especially good for showing large changes over time of the ... Read More »
http://www.ehow.com/info_8178225_bar-graphs-used.html

## How is calculus used in economics?

For the most part, all of the principles of economics can be expressed with the use of calculus. While it can be confusing, calculus is the easiest way to verify economic activity.Total RevenueCalc... Read More »

## How to Calculate Graphs?

Learning how to calculate graphs correctly can help you interpret data in a variety of ways. Graphs can show relationship between different variables and how they change over time. They can show yo... Read More »
http://www.ehow.com/how_8064878_calculate-graphs.html

## Who invented bar graphs?

William Playfair created the bar chart in 1786 after being inspired by Joseph Preistly's timeline charts. The first images of the bar chart appeared in "Commercial and Political Access." The creati... Read More »

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