Question

Population ‘X’ has 700 males and 300 females. Population ‘Y’ has 250 males and 220 females. Calculate the sex ratio for the populations, ‘X’ and ‘Y’ and select the correct option.

• A. Population ‘X’ approximately has 233 males per 100 females
• B. Population ‘X’ approximately has 233 females per 100 males
• C. Population ‘Y’ approximately has 113 males per 100 females
• D. Both a and c are correct

Answer 1

The correct option is D Both a and c are correct

An individual in a population can be biologically born as a female or male and based on the sex of the child, the population can be divided into male population and female population. The ratio of male to female population of an area is called sex ratio.

It is one of the important attributes calculated under the human population census. It can be calculated as the ratio of the total number of male individuals to the total number of female individuals in a given population of any region multiplied by 100.

Sex ratio =$\frac{Numberofmales}{Numberoffemales}X100$

As per the data given in the question,

Population ‘X’ has 700 males and 300 females, hence the sex ratio would be
$\frac{700}{300}$ x 100
≈ 233
Therefore, population ‘X’ approximately has 233 males per 100 females and hence, males > females

Population ‘Y’ has 250 males and 220 females, hence the sex ratio would be
$\frac{250}{220}$ x 100
≈ 113
Therefore, population ‘Y’ approximately has 113 males per 100 females and hence, males ≈ females.