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A pie chart showing the percentage by web browser visiting Wikimedia sites (April 2009 to 2012) In mathematics, a percentage (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign (%), [1] although the abbreviations pct., pct, and sometimes pc are also used. [2]
To represent the economy of 18th century England, Playfair used statistical graphs, bar charts, line graphs, area charts, and histograms. In his work, Statistical Breviary, he is credited with introducing the first pie chart. [10] [11] [12] Around 1820, modern geography was established by Carl Ritter. [13]
The MammaPrint gene pattern is a commercial-stage 70-gene panel marketed by Agendia, [74] that was developed in patients under age 55 years who had lymph node negative breast cancers. [72] The commercial test is marketed for use in breast cancer irrespective of estrogen receptor (ER) status. [ 72 ]
This is sometimes referred to as a unit of standard atmospheres (atm). Total atmospheric mass is 5.1480×10 18 kg (1.135×10 19 lb), [42] about 2.5% less than would be inferred from the average sea level pressure and Earth's area of 51007.2 megahectares, this portion being displaced by Earth's mountainous terrain.
Pie chart showing the proportion of lurkers, contributors and creators under the 90–9–1 principle. In Internet culture, the 1% rule is a general rule of thumb pertaining to participation in an Internet community, stating that only 1% of the users of a website actively create new content, while the other 99% of the participants only lurk.
TheCounter.com is a defunct a web counter service, and identifies sixteen versions of six browsers (Internet Explorer, Firefox, Safari, Opera, Netscape, and Konqueror). Other browsers are categorised as either "Netscape compatible" (including Google Chrome, which may also be categorized as "Safari" because of its "Webkit" subtag) or "unknown".
The first 30 ppm increase in CO 2 concentrations took place in about 200 years, from the start of the Industrial Revolution to 1958; however the next 90 ppm increase took place within 56 years, from 1958 to 2014. [8] [44] [45] Similarly, the average annual increase in the 1960s was only 37% of what it was in 2000 through 2007. [46]
Cornish said the concept is plain and simple: "It is the probability that at least 0.01 of an inch of precipitation will fall on your rooftop if you live in the forecast area. That's about enough ...