Biology, asked by hamza8599, 1 year ago

Crude birth rate is a simplest measure of fertility because it includes

Answers

Answered by satanu735
0

Answer:

Explanation:

The crude birth rate in a year or other period is the total number of live births per 1,000 population (divided by the length of the period in years). The number of live births is normally taken from a universal registration system for births; population counts from a census, and estimation through specialized demographic techniques[clarification needed]. The birth rate (along with mortality and migration rates) is used to calculate population growth. The estimated average population may be taken as the mid-year population.

Another term used interchangeably with birth rate is natality.

When the crude death rate is subtracted from the crude birth rate, the result is the rate of natural increase (RNI).[5] This is equal to the rate of population change (excluding migration).

The total (crude) birth rate (which includes all births)—typically indicated as births per 1,000 population—is distinguished from a set of age-specific rates (the number of births per 1,000 persons, or more usually 1,000 females, in each age group). The first known use of the term "birth rate" in English was in 1859.

World historical and projected crude birth rates (1950–2050)

UN, normal variant, 2009 rev.

[out of date]

Years CBR Years CBR

1950–1955 37.2 2000–2005 21.2

1955–1960 35.3 2005–2010 20.3

1960–1965 34.9 2010–2015 19.4

1965–1970 33.4 2015–2020 18.2

1970–1975 30.8 2020–2025 16.9

1975–1980 28.4 2025–2030 15.8

1980–1985 27.9 2030–2035 15.0

1985–1990 27.3 2035–2040 14.5

1990–1995 24.7 2040–2045 14.0

1995–2000 22.5 2045–2050 13.4

The average global birth rate was 18.5 births per 1,000 total population in 2016. The death rate was 7.8 per 1,000. The RNI was thus 10.6 percent. In 2012 the average global birth rate was 19.611 according to the World Bank and 19.15 births per 1,000 total population according to the CIA,compared to 20.09 per 1,000 total population in 2007.

The 2016 average of 18.6 births per 1,000 total population is estimated to be about 4.3 births/second or about 256 births/minute for the world.

Answered by ravilaccs
0

Answer:

The crude birth rate is the simplest measure of fertility because it includes the mid-year population.

Explanation:

  • Crude Birth Rate the simplest indicator of a population's fertility in a given year is the number of births divided by the population's average size for the year.
  • The ratio of a population's live births during a given year to its total mid-year population for the same year is usually multiplied by, the population estimated at midyear.
  • The CBR is an important measure of fertility because it directly links fertility to population growth. CBR computation is simple and quick, and only requires a small amount of data.
  • CBR also indicates a population's fertility level.
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