The question asks to identify the Viceroy of British India responsible for organising the statistical survey of India.
Lord Mayo served as the Viceroy of British India from 1869 to 1872.
He is credited with initiating and organising the first comprehensive statistical survey of British India. This significant undertaking took place around the year 1871-72.
The primary objective of this survey was to collect detailed data across various aspects of the Indian subcontinent, including demographics, agriculture, trade, and infrastructure. The gathered information was intended to aid the British administration in better governance, policy-making, and resource management.
While some forms of data collection existed prior, Lord Mayo's effort represented a more systematic and large-scale approach to understanding the socio-economic conditions of India during that period.