2. Research methodology
India is the seventh-largest country in the world, situated north of the equator between 8°4’ north to 37°6’ north latitude and 68°7’ to 97°25’ east longitude (India year Book, 2007) with a total area of 3,287,263 square kilometres (1,269,219 sq mi) (India, 2012). In India there are 28 states and 8 Union Territories (States and Union Territories, 2020) . India is the worlds second most populous country (1.2 billion, census, 2011) after Peoples Republic of China. India has 614000 inhabited villages and 72.2 percent of the total population reside in this rural areas (Census, 2011, Provisional Population Totals) . On the basis of net migrants by last record Maharasthra had most immigartion with 2.3 million, followed by Delhi (1.7 million), Gujarat (0.68 million), Haryana (0.67 million). Uttarpardesh and Bihar topped the list for interstate emigration. The States of Uttar Pradesh, Maharasthra, Bihar, West Bengal and Madhya Pradesh accounts for almost half (48.89 percent) of the Total Indian Population (India Census, 2011). According to report of National Institution for Transforming India, Government of India the population density of State of West Bengal (1029 persons per sq km) is highest followed by Bihar (1102 persons per sq km) and among Union Territories the population density of Delhi (11297 persons per sq km) is highest followed by Chandigarh (9252 persons per sq km). Secondary published data from different websites is used by us. Dataset for the climate indicators includes high temperature and low temperature. As the data was not normally distributed therefore Kendall and Spearman rank correlation statistical tests were utilized to examine the correlation between variables using , SPSS 20 and XLSTAT software (Addinsoft, 2010).