Statistics – An introduction
Statistics is a branch of mathematics that is used to help people to understand the information that is contained in large amounts of data such as numbers. The numbers and other facts that are collected for various purposes are called data. In the form that data is collected they are known as raw data. Raw data is often presented as a list and one of the first tasks in processing raw data is to sort a list into some required order. Once data has been collected it must be organised in such a way to enable trends and patterns to be seen. The variables that make up the data can be discrete, or continuous. Pie charts can be used to highlight certain features of data contained in a report. Data and the related statistics are normally collected for some specific purpose. The process of collection of data normally starts by someone asking a question.