The basic equation for calculating population growth multiplies the population size by the per capita growth rate, which is calculated by subtracting the per capita death rate from the per capita birth rate. This simplis... More »

A demographic equation is a formula that measures population change. It estimates the increase or decrease in population by adding the number of births plus the net migration to the previous count, then subtracting the n... More »

The Hardy-Weinberg equations calculate the genetic variation and allele frequencies of a population at equilibrium. They are p + q = 1 and p^2+ 2pq + q^2 = 1 where p is the frequency of the "A" allele and q is the allele... More »

Three characteristics of population are population density, fecundity or birth rate and mortality or death rate. Characteristics of specific populations can be measured, evaluated and tracked for comparison purposes or t... More »

China's so-called one child policy has had the effect of drastically reducing the birth rate and controlling population growth while causing distress and disruption at the personal level. China formally announced plans t... More »

Factors that cause population growth include increased food production, improved health care services, immigration and high birth rate. These factors have led to overpopulation, which has more negative effects than posit... More »

The crude birth rate is calculated by dividing the number of the total population by the number of births in one year, according to Columbia University. The CBR of a population can be used to assign a stage of developmen... More »