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# Changes in price indices - Double bar chart

## Changes in price indices - Double bar chart

"A price index (plural: “price indices” or “price indexes”) is a normalized average (typically a weighted average) of price relatives for a given class of goods or services in a given region, during a given interval of time. It is a statistic designed to help to compare how these price relatives, taken as a whole, differ between time periods or geographical locations.
Price indexes have several potential uses. For particularly broad indices, the index can be said to measure the economy's general price level or a cost of living. More narrow price indices can help producers with business plans and pricing. Sometimes, they can be useful in helping to guide investment." [Price index. Wikipedia]
The double bar chart example "Changes in price indices" was redrawn from the website of the United States Department of Agriculture Economic Research Service. [ers.usda.gov/data-products/chart-gallery/detail.aspx?chartId=29456&ref=collection#.Ue5MMaxad5I]
The double bar chart example "Changes in price indices" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Bar Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park. Read more
Double bar graph

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The answer how to create a bar chart can be found in ConceptDraw software. The simple tips guide you through the software to quickly learn how to create a bar chart. Read more

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## Bar Graphs

The Bar Graphs solution enhances ConceptDraw PRO v10 functionality with templates, numerous professional-looking samples, and a library of vector stencils for drawing different types of Bar Graphs, such as Simple Bar Graph, Double Bar Graph, Divided Bar Graph, Horizontal Bar Graph, Vertical Bar Graph, and Column Bar Chart. Read more

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Easy charting software comes with beautiful chart templates and examples. This makes it easy to create professional charts without prior experience. Read more

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ConceptDraw Basic gives the opportunity of interaction with any ODBC-compatible databases. For this the Database Access Objects Model is provided. All calls to the database are made by certain methods of objects of this model. Read more