The functions of statistics are: 

1. Presentation of facts in figures:

Statistics presents the various facts and figures, in such a manner so that various complicated facts become easy, brief and concrete and they may be understood easily.

2. Establishment of relationship:

With the help of statistical methods (correction) relationship between two or more facts may be established.

3. Comparison: 

Two or more effects may be compared with the help of statistics. Various averages, rates, percentages, and co-efficients are used for this purpose.

4. Interpretation of problems

With the help of statistical devices, interpretation of various problems may be done.

5. Formation of laws and principles of other sciences:

Statistics helps to other social and natural sciences in forming the laws and with its help the various rules and principles of those sciences may be tested.

6. Helpful in deciding the policy:

With the help of statistics various policy decisions may be taken logically and successfully.