Fertility-define the annual crude birth rate, statistics, Basic Statistics

Fertility: In order to study at which speed, at which the population is increasing, fertility rates are used which are of various types? Important among these are:
Crude birth rate: it is the simplest method of measuring fertility. It acts as an index of the relative speed at which additions are being made to the population through child birth. In this method the number of births is related to the total population. Since it is only a live birth that signifies an addition to the existing population, live births alone are considered in measuring fertility, thus excluding still births.

The annual crude birth rate is defined as:
Crude birth rate = annual births/annual mean population × 1000
In this measure the births are related to the mean population and not to the population at a particular date. The crude birth rate of a given year tells us that what rate births have augmented the population over the course of the year. 
The crude birth rate usually lies between 10 and 55 per 1000. The level of the crude birth rate is determined by:
(i) The sex and age of distribution of the population and
(ii) The fertility of the population i.e. the average rate of child bearing of females.
A relative high crude birth rate can be recorded if the sex and age distribution is favorable even though fertility is low, i..e. countries with a relatively large proportion of population in the 15-50 years group will have a relatively high crude birth rate, other being equal.
Specific fertility rate: the concept of specific fertility arises out of the fact that fertility is affected by a number of factors such as age, marriage, state or region, urban rural characteristics, etc. when fertility rate is calculated on the basis of age distribution; it is called the age specific fertility rate. While calculating age specific fertility rate women of different ages in the child bearing age are placed in small age groups so as to put then at par with others of child bearing capacity. The fertility of women differs from age to age and, therefore, the grouping of women of different ages is essential. The capacity to bear children is much higher in the age group 20 to 25 than in the age group 40 to 45.
S. F. R = (Number of live births which occurred to females of a specified age group of the population of a given geographic area during a given year/mid year female population of the specified age-group in the given geographic area during the same year) × 1000
General fertility rate: this rate refers to the proportion of the number of children born per 1000 of females, the reproductive of child bearing age, this numerator of this rate would remain the same as the crude rate, but the denominator would be limited to the sex group of the population able to contribute to the birth rate. The formula for such a rate is
General fertility rate (G. F. R) = (number of live births which occurred among the population of a given geographical area during a given year/mid year female population of ages 15 to 49 in the given geographical area during the same year) × 1000
The computation of F.G.R requires that a decision be taken beforehand as to which years of the life a woman should be included in the child bearing period. Although the practice varies in this respect, generally the child bearing age is taken 15 to 50 years. Births to mothers under 15 and above 50 are so rare that they are not recorded separately but are included in the age group 15 and 49 respectively.  

Expertsmind.com offers unique solutions for statistics assignments, homework

Posted Date: 2/25/2012 4:41:33 AM | Location : United States

Related Discussions:- Fertility-define the annual crude birth rate, statistics, Assignment Help, Ask Question on Fertility-define the annual crude birth rate, statistics, Get Answer, Expert's Help, Fertility-define the annual crude birth rate, statistics Discussions

Write discussion on Fertility-define the annual crude birth rate, statistics
Your posts are moderated
Related Questions
i need problems and their answers in a simplified way to understand the material because im really having troubles understanding how to solve conversion bonds and share warrants pr

To history income and expenditures/expenses when they connect with the identification requirements of the finance form engaged regardless of when the money action happens.

Find a population data set that contains six entries, has a mean of 5, and has a standard deviation of 2

what''s the asset?

The Washington Corp stock has a β of 1.15 and it will pay a dividend of $2.50 next year. The expected rate of return of the market is 17% and the current riskless rate is 9%. The e

In November 2010, every Mzumbe University student had an income of 150000/= per month,facing the price of meal (X) 1000/= and average price of other goods (Y) 1000/=.The initial ut

A nurse researcher is investigating the effect of timing of standard pain control interventions on severity of pain in adolescents with sickle-cell disease.  She establishes three

what is the largest coefficient of (1+3x)^4 is ?

The Video Club Martin rents movies at "regular price" andat  "half price". Usually if the films are regularly priced one day, they will be at regular price the next day with probab

To determine the amount at which inventory should be reported on the December 31 Year 1 balance sheet, Monroe Company compiles the following information for its inventory of Produc