Discover what quartiles are in statistics, how to calculate them, and see examples to help you interpret data more effectively. Learn about lower, median, and upper quartiles.

Use the tools and techniques of data analysis to make sense of mountains of information.

The exponentially increasing amounts of data being generated each year make getting useful information from that data more and more critical. The information frequently is stored in a data warehouse, ...

James McWhinney is a long-tenured Investopedia contributor and an expert on personal finance and investing. With over 25 years of experience as a full-time communications professional, James writes ...

Today, some of that detective work is being made easier thanks to a new emphasis on data analysis in police departments. For example, departments can now detect correlations between statistics ...

This column shows how to use the Data Table option in Excel’s What-If Analysis tool.

As it mines new insights from all those numbers, data analysis in sports is already producing some game-changing results.