National Statistics Day is observed every year on June 29 to celebrate or honor the birth anniversary of Professor Prasanta Chandra Mahalanobis, the father of Indian Statistics. This International Day also honors the contribution of Professor Prasanta Mahalanobis in the field of statistical development and economic planning which has a positive effect on the socio-economic landscape of our country. The main aim of this International Day is to spread awareness about the importance of statistics in daily life.

Professor Prasanta Chandra Mahalanobis was born on June 29, 1893, in the state of West Bengal and also the founder or creator of the Indian Statistical Institute (ISI). The Indian Government decided to celebrate National Statistics Day every year on June 29 to honor the contribution of Professor Chandra Mahalanobis in the field of statistics. Thus, National Statistics Day is first celebrated on June 29 in the year 2007 to spread awareness about the importance of Statistics in daily life and honor the contribution of Professor Prasanta Chandra Mahalanobis in the field of statistics. This global day also celebrates the birthday anniversary of Prasanta Chandra Mahalanobis which was born on June 29.

Statistics is the study of analyze, presentation, interpretation, and collection of data that is based on the planning of data collection in terms of the design of reviews and research. It is also a branch of mathematics to collect, analysis, present, and summarize data which also plays an important role in the development and growth of the country.

There are two important types of statistics – inferential statistics which uses those properties to study or analyze hypotheses and draw conclusions whereas descriptive statistics clarifies the properties of sample and population data.