Statistics is one of the optional subjects that the UPSC offers in the civil services mains examination. It is an optional that finds very few takers every year, in fact, the number rarely rises above 20. This is, no doubt, due to the specialised nature of the subject and because of the fact that very few students take this subject for their graduation.

Statistics is closely related to mathematics. It is in fact, a branch of mathematics dealing with data collection, organization, analysis, interpretation and presentation. The chief difference between the two is that while mathematics has a lot of theoretical aspects (apart from the practical application), statistics is almost entirely an applied science. In this article, we discuss all about the statistics optional for the UPSC IAS EXAM.