Statistics may be divided into two main branches:
(1) Descriptive Statistics (2) Inferential Statistics
(1) Descriptive Statistics:
In descriptive statistics, it deals with collection of data, its presentation in various forms, such as tables, graphs and diagrams and findings averages and other measures which would describe the data.
For Example: Industrial statistics, population statistics, trade statistics etc… Such as businessman make to use descriptive statistics in presenting their annual reports, final accounts, bank statements.
(2) Inferential Statistics:
In inferential statistics, it deals with techniques used for analysis of data, making the estimates and drawing conclusions from limited information taken on sample basis and testing the reliability of the estimates.
For Example: Suppose we want to have an idea about the percentage of illiterates in our country. We take a sample from the population and find the proportion of illiterates in the sample. This sample proportion with the help of probability enables us to make some inferences about the population proportion. This study belongs to inferential statistics.