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Pie chart of populations of English native speakers. A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area) is proportional to the quantity it represents.
In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.
UN estimates (as of 2017) for world population by continent in 2000 and in 2050 (pie chart size to scale) Asia Africa Europe Central/South America North America Oceania. Population estimates for world regions based on Maddison (2007), [29] in millions. The row showing total world population includes the average growth rate per year over the ...
People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [7] The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.
Number of Births, by race and Hispanic origin of the mother and month of birth: United States, January–June, final 2019 and 2020, and provisional 2021 (Provisional 2021 data is based on 99.92% of births) [69]
Example: the pie chart for boron shows it to be composed of about 20% 10 B and 80% 11 B. This isotope mix causes the atomic weight of ordinary Earthly boron samples to be expected to fall within the interval 10.806 to 10.821. and this interval is the standard atomic weight. Boron samples from unusual sources, particularly non-terrestrial ...
According to Statistics Canada, at the time of the 2011 Canadian census the city of Montreal proper had 1,649,519 inhabitants. [5] A total of 3,824,221 lived in the Montreal Census Metropolitan Area (CMA) at the same 2011 census, up from 3,635,556 at the 2006 census (within 2006 CMA boundaries), which means a population growth rate of +5.2% between 2006 and 2011. [6]
Cuba is in the fourth stage of demographic transition. In terms of age structure, the population is dominated (71.1%) by the 15- to 64-year-old segment. The median age of the population is 39.5, making it the oldest in the Americas, and the gender ratio of the total population is 0.99 males per female.