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A percentage point or percent point is the unit for the arithmetic difference between two percentages. For example, moving up from 40 percent to 44 percent is an increase of 4 percentage points (although it is a 10-percent increase in the quantity being measured, if the total amount remains the same). [1]
Population growth increased significantly as the Industrial Revolution gathered pace from 1700 onwards. [14] The last 50 years have seen a yet more rapid increase in the rate of population growth [14] due to medical advances and substantial increases in agricultural productivity, particularly beginning in the 1960s, [15] made by the Green ...
In economics, the Gini coefficient (/ ˈ dʒ iː n i / JEE-nee), also known as the Gini index or Gini ratio, is a measure of statistical dispersion intended to represent the income inequality, the wealth inequality, or the consumption inequality [2] within a nation or a social group.
This relationship is perfect, in the sense that an increase in is always accompanied by an increase in . This means that we have a perfect rank correlation, and both Spearman's and Kendall's correlation coefficients are 1, whereas in this example Pearson product-moment correlation coefficient is 0.7544, indicating that the points are far from ...
Population growth resumed, and in 1994 the population was 10.33 million. From 1994 to 2003 natural growth was slightly negative (−0.15% per year) and the population decreased to 10.2 million. Since 2005, natural growth has been positive, but in recent times the most important influence on the population of the Czech Republic has been ...
Cope's rule: Population lineages tend to increase in body size over evolutionary time. Coulomb's law is an inverse-square law indicating the magnitude and direction of electrostatic force that one stationary, electrically charged object of small dimensions (ideally, a point source ) exerts on another.
A substantial fraction of the water supply for some regions consists of water extracted from water stored in stocks, and when withdrawals exceed recharge, stocks decrease. By some estimates, as much as 30 percent of total water used for irrigation comes from unsustainable withdrawals of groundwater, causing groundwater depletion .
Millesimal fineness is a system of denoting the purity of platinum, gold and silver alloys by parts per thousand of pure metal by mass in the alloy. For example, an alloy containing 75% gold is denoted as "750".