Which one of the following state ments regarding sex composition is not correct?

The sex ratio is a fundamental demographic indicator measuring the balance between males and females. In many countries and at the international level, it is expressed as the number of males per 1,000 females or per 100 females. Conversely, in India, the sex ratio is specifically defined as the number of females per 1,000 males [2]. At the global level, the average sex ratio is approximately 102 males per 100 females. Statement 4 is incorrect because Asia is characterized by a low sex ratio (female-to-male) or a high proportion of males, often described as 'male-biased' or 'unfavourable to females' [2]. Specifically, Asia has long had the highest proportion of males in the world, with an overall sex ratio of approximately 105 to 107.5 males per 100 females in major countries like India and China.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 13: Cultural Setting > India: Sex Ratio (1901–2011) > p. 80
2. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 13: Cultural Setting > Sex Ratio > p. 77