Prof. Prasanta Chandra Mahalanobis, known as the ‘Father of Indian Statistics’, was born on 29 June 1893 in Bengal. In recognition of his contribution to statistics, 29 June is observed as National Statistics Day every year. The theme of National Statistics Day 2022 is ‘Data for Sustainable Development’.

National Statistics Day was first celebrated on June 29, 2007 to acknowledge the contributions of  Prof. P C Mahalanobis in statistics.

The Indian Statistical Institute was founded by Mahalanobis in 1931, with facilities for high level research, training and execution of large-scale project work.  Sankhya, the Indian Journal of Statistics, was started in 1933. He was one of the members of the first Planning commission of free India.

In 1949, Mahalanobis became the Chairman of the Indian National Income
Committee, when he began to think about the macro-economic problems of India. The Mahalanobis model, was employed in the Second Five Year Plan, which worked towards the rapid industrialisation of India. He established the National Sample Survey (N.S.S.) in 1950, and also organized a
statistical unit devoted to the study of national income

Mahalanobis Distance

The Mahalanobis distance is a measure of the distance between a point P and a distribution D. Mahalanobis distance is widely used in cluster analysis and classification techniques. It is closely related to Hotelling’s T-square distribution used for multivariate statistical testing and Fisher’s Linear Discriminant Analysis that is used for supervised classification

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