What is statistics

Statistics is a branch of mathematics that deals with collection, analysis, interpretation, and presentation of data. When applying any statistical concept, for example to a scientific, social or industrial problem, conventionally one begins with the statistical model process or statistical population that needs to be studied. Statistical populations cover diverse topics such as "every atom that composes of a crystal" or "all people living in a country." Statistics as a branch of mathematics involves all aspects of data from data collection planning to surveys and experiments. To collect data, statisticians develop specific survey samples and experiment designs. Development of samples assures that both inferences and conclusions represent the population as a whole.

Types of Studies in Statistics

Statistics involves distinctly two types of studies. They include:

• Experimental study

  This statistical study involves taking the measurements of the system under study. The system is then manipulated and additional measurements are taken by the use of the same procedure in order to ascertain whether the manipulations have by any way modified the measurements values.

• Observational study

  The observational study, unlike experimental study, does not by any way involve any experimental manipulation. In an observational study, statistical data is gathered. After the gathering of data, the correlation between response and the predictors are investigated.