Question

Define Crude Birth Rate (CBR) and Crude Death Rate (CDR).

Hint:

CBR → Births per 1000 people CDR → Deaths per 1000 people

Answer 1

Concept: Crude Birth Rate and Crude Death Rate are important demographic indicators used to study population growth and structure.
Crude Birth Rate (CBR):
Definition: Crude Birth Rate is the number of live births per 1000 people in a population in a given year.
Formula: \[ \text{CBR} = \frac{\text{Number of live births in a year}}{\text{Mid-year population}} \times 1000 \] It indicates the fertility level of a population.
Crude Death Rate (CDR):
Definition: Crude Death Rate is the number of deaths per 1000 people in a population in a given year.
Formula: \[ \text{CDR} = \frac{\text{Number of deaths in a year}}{\text{Mid-year population}} \times 1000 \] It reflects the mortality level of a population.
Importance:

Used in population studies and census data
Helps measure population growth
Useful in planning health and development policies