Statistical data on the population and demographics of 228 countries, including change, sex ratios, life expectancy, and percent with HIV/AIDS. There are also detailed explanations of the means of producing these statistics. It is...

Multiple graphs can represent the same data set and make the information easier to understand.

The importance of data analysis in science projects is explained. Describes common mistakes young scientists make. The article then discusses how to find out what the standard methods of data analysis are for the type of research you...