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Cool Info-graphics of the Week [Sep 5]

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Once every week Pointy Haired Dilbert celebrates the art of chart making by sharing 4-5 of the best info-graphics featured in various web sites. Click here to see the visualizations featured earlier.

Anatomy of a Great Speech – Obama’s acceptance speech at DNC

Anatomy of Great speech - Obama's acceptance speech at DNC mile high

Presentation Zen captures Obama’s symphony like acceptance speech in a graph shown above. Do read Garr Reynold’s remarks.

Tracking Hurricane Gustav a la infographic style

Tracking Hurricane Gustav - Infographics

These days telling a complex story like how a hurricane strikes is made easy, thanks to tons of flash based visualization tools available for news reporters. [via Flowing Data]

How would tell your story if you are aiming to change a habit? – Google Chrome Comic Book

Google Chrome Launch - Comic book infographic

Google has launched their open source browser Chrome. Now this is a very bold step, when millions of people have developed a hobby of using IE or Firefox and pretty much satisfied with them. How did Google tell their story of new browser and created a need for it ? By creating a comic book and telling every one how browsers work, about memory leaks, garbage collection, UI design. Very effective.


More Olympics visualizations – News paper comes to life and tells impressive stories

News paper infographics - olympics atheletics

What would you do when you are revamping infographics department of a leading news paper? Folks at El Heraldo have done a fantastic job.

Sony Walkman Subway map advertisement

Sony walkman sub way map advertisement

Okay, this is not infographic, but it is a very creative way to tell that Sony Walkman is a constant companion no matter which route you take on the metro. Very creative, very effective. I can’t imagine taking metro to anywhere without company or music. [via cool infographics]

Click here to check out other cool infographics. 🙂

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Excel formula list - 100+ examples and howto guide for you

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Weighted average formula in excel

Weighted Average in Excel [Formulas]

Learn how to calculate weighted averages in excel using formulas. In this article we will learn what a weighted average is and how to Excel’s SUMPRODUCT formula to calculate weighted average / weighted mean.

What is weighted average?

Wikipedia defines weighted average as, “The weighted mean is similar to an arithmetic mean …, where instead of each of the data points contributing equally to the final average, some data points contribute more than others.”

Calculating weighted averages in excel is not straight forward as there is no built-in formula. But we can use SUMPRODUCT formula to easily calculate them. Read on to find out how.

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