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Option 4 : June 29
The correct answer is June 29.
- India observes June 29 as National Statistics Day every year. The day is observed to honour Late Professor Prasanta Chandra Mahalanobis’s work in the field of Statistics and his contribution as a member of India’s first planning commission.
- The main event of the Statistics Day, 2022 was organized at New Delhi Municipal Council through physical-cum-virtual mod.
- It was also celebrated as a part of a week-long celebration by the Ministry of Statistics and Programme Implementation (MoSPI), of Azadi ka Amrit Mahotsav, an initiative of the government to commemorate the 75th year of India’s independence.
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Mahalanobis belonged to a family of Bengali landed gentry who lived in Bikrampur (now in Bangladesh). His grandfather Gurucharan (1833–1916) moved to Calcutta in 1854.
Mahalanobis distance
- Mahalanobis distance is one of the most widely used metrics to find how much a point diverges from a distribution, based on measurements in multiple dimensions. It is widely used in the field of cluster analysis and classification. It was first proposed by Mahalanobis in 1930 in the context of his study on racial likeness.
Sample survey
- Mahalanobis's most important contributions are related to large-scale sample surveys. He introduced the concept of pilot surveys and advocated the usefulness of sampling methods. Early surveys began between 1937 and 1944 and included topics such as consumer expenditure, tea-drinking habits, public opinion, crop acreage, and plant disease.
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