(a) The sex ratio in India as per the 2011 Census is 940 females per 1000 males. Sex ratio is used to describe the number of females per 1000 males. Sex ratio is a valuable source for finding the population of women in India and what is the ratio of women to that of men in India. The Sex Ratio 2011 shows an upward trend from the census 2001 data. Census 2001 revealed that there were 933 females to that of 1000 males.