Explanation:

As of the 2011 census, Allahabad is the most populous district of Uttar Pradesh while Mahoba being the least populated. Only 3 districts of Jaunpur, Azamgarh and Deoria have a sex ratio greater than 1000 while Gautam Buddha Nagar stands lowest in the tally with a very low ratio of 851. On the contrary, Gautam Buddha Nagar scores highest in literacy rate at 80.12% and Kanpur Nagar 2nd at 79.54%, while both being the poorest districts in terms of sex-ratio, depicting a negative-correlation among literacy and sex-ratio in this case. Districts of Srawasti, Bahraich and Balrampur haven't even crossed the 50% literacy mark yet.