Search results
Results from the WOW.Com Content Network
GDP density. GDP density is a measure of economic activity by area. It is expressed as gross domestic product per square kilometer and can be calculated by multiplying GDP per capita of an area by the population density of that area. Amongst other uses it demonstrates the effects of geography on economy. [1]
Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air ...
Doubling time. The doubling time is the time it takes for a population to double in size/value. It is applied to population growth, inflation, resource extraction, consumption of goods, compound interest, the volume of malignant tumours, and many other things that tend to grow over time. When the relative growth rate (not the absolute growth ...
Between 1975 and 2010, the population doubled to 1.2 billion, reaching the billion mark in 2000. According to the UN's World Population dashboard, India's population now stands at slightly over 1.428 billion, edging past China's population of 1.425 billion people, as reported by the news agency Bloomberg.
This is a list of cities worldwide by population density. The population, population density and land area for the cities listed are based on the entire city proper, the defined boundary or border of a city or the city limits of the city. The population density of the cities listed is based on the average number of people living per square ...
Quantile. (−∞,Q) (Q,Q) (Q,Q) (Q,+∞) In statistics and probability, quantiles are cut points dividing the range of a probability distribution into continuous intervals with equal probabilities, or dividing the observations in a sample in the same way. There is one fewer quantile than the number of groups created.
In world demographics, the world population is the total number of humans currently living. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 years more to reach 8 billion.
In this case people often do not correct for the finite population, essentially treating it as an "approximately infinite" population. If one is interested in measuring an existing finite population that will not change over time, then it is necessary to adjust for the population size (called an enumerative study).