Data journalists generally use Microsoft Excel for analysing data. Why? Well when you run Windows on your machine, Word will most likely be your text editor and Excel ...

Data clustering is the process of programmatically grouping items that are made of numeric components. For example, suppose you have a dataset where each item represents a person's age, annual income ...

Designed to introduce students to quantitative methods in a way that can be applied to all kinds of data in all kinds of situations, Statistics and Data Visualization Using R: The Art and Practice of ...

An understanding and working knowledge of the basic principles of statistics are of central importance in understanding the sport and health sciences. Introduction to Statistics in Human Performance: ...

The R language can be used to perform a sign test, which is handy for comparing "before and after" data. The Sign Test is most often used in situations where you have "before and after" data and you ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Many of Pew Research Center’s survey analyses show relationships between two ...