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Excel has not changed much since the 1980's (even in 2007)
However the computer on your desk has changed dramatically. It is hundreds of times faster and more powerful than 10 years ago. It is also connected to multiple sources of data within your enterprise and to data sources from around the world through the Internet.
Due to these changes, Excel has become the most user friendly and customizable data analysis and reporting program.
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You have discovered the most powerful function in Excel: SUMPRODUCT
You are now ready for this advanced course on Excel
Analyzing Data and Reporting with Excel
Database 101 Excel and External Data Analyzing Data with Excel Reporting with Excel Other Functionalities