What is the population pyramid? How do they help in understanding the population in the country?

Hint: People of any country are diverse in many aspects. Everyone is unique in their own way. People can be distinguished by their age, sex, their place of birth, and residence. Some other attributes of the population are occupation, education, and life expectancy.

Complete answer: The number of women and men in a particular country is a major demographic characteristic. Sex ratio refers to the ratio between the number of women and men in the population. In some countries, it’s counted by the number of males per 1000 females or vice-versa. It’s very important information which gives the status of women in a particular country. When the sex ratio unfavorable to women it’s called there is gender discrimination. One method is to know about the sex ratio in the population pyramid. It’s a graphical representation of the age and sex composition of a specific population in the country. The age and sex structure of the residents determine the ultimate shape of a population pyramid, such that the characterization may take the form of a pyramid, have a columnar shape, or have an irregular profile. It can be used to compare dissimilarity between male and female populations of an area. They also show the number depending on the population at any given moment. They are useful for learning the future of a particular region as well as studying historical and current population trends.

Note: There is a three type of population pyramid which is based on fertility rate & mortality rate. The three types are expansive(fertility & mortality rates both are high), constrictive(lower mortality rate with constant fertility rate), and stationary(fertility & mortality rates both are low).