Chi-squared distributionIn probability theory and statistics, the chi-squared distribution (also chi-square or -distribution) with degrees of freedom is the distribution of a sum of the squares of independent standard normal random variables. The chi-squared distribution is a special case of the gamma distribution and is one of the most widely used probability distributions in inferential statistics, notably in hypothesis testing and in construction of confidence intervals.
Urban planningUrban planning, also known as town planning, city planning, regional planning, or rural planning, is a technical and political process that is focused on the development and design of land use and the built environment, including air, water, and the infrastructure passing into and out of urban areas, such as transportation, communications, and distribution networks and their accessibility.
Housing estateA housing estate (or sometimes housing complex, housing development, subdivision or community) is a group of homes and other buildings built together as a single development. The exact form may vary from country to country. Popular throughout the United States and the United Kingdom, they often consist of single family detached, semi-detached ("duplex") or terraced homes, with separate ownership of each dwelling unit. Building density depends on local planning norms.
Associated PressThe Associated Press (AP) is an American not-for-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association, and produces news reports that are distributed to its members, U.S. newspapers and broadcasters. Since the award was established in 1917, the AP has earned 58 Pulitzer Prizes, including 35 for photography. It is also known for publishing the widely used AP Stylebook.
South AmericaSouth America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southern subregion of a single continent called America. South America is bordered on the west by the Pacific Ocean and on the north and east by the Atlantic Ocean; North America and the Caribbean Sea lie to the northwest.
Life (magazine)Life was an American magazine published weekly from 1883 to 1972, as an intermittent "special" until 1978, and as a monthly from 1978 until 2000. During its golden age from 1936 to 1972, Life was a wide-ranging weekly general-interest magazine known for the quality of its photography, and was one of the most popular magazines in the nation, regularly reaching one-quarter of the population. Life was independently published for its first 53 years until 1936 as a general-interest and light entertainment magazine, heavy on illustrations, jokes, and social commentary.
SkyscraperA skyscraper is a tall, continuously habitable building having multiple floors. Modern sources currently define skyscrapers as being at least or in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Historically, the term first referred to buildings with between 10 and 20 stories when these types of buildings began to be constructed in the 1880s. Skyscrapers may host offices, hotels, residential spaces, and retail spaces.
War on terrorThe war on terror, officially the Global War on Terrorism (GWOT), is a global counterterrorism military campaign initiated by the United States following the September 11 attacks and is also the most recent global conflict spanning multiple wars. The main targets of the campaign were militant Islamist and Salafi jihadist armed organisations such as al-Qaeda, the Islamic State, and their international affiliates, which were waging military insurgencies to overthrow governments of various Muslim-majority countries.
ManhattanManhattan (mænˈhætən,_mən-) is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is coextensive with New York County, one of the original counties of the U.S. state of New York. Located near the southern tip of the State of New York, Manhattan is based in the Eastern Time Zone and constitutes both the geographical and demographic center of the Northeast megalopolis and the urban core of the New York metropolitan area, the largest metropolitan area in the world by urban landmass.
Cauchy distributionThe Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. It is also known, especially among physicists, as the Lorentz distribution (after Hendrik Lorentz), Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. The Cauchy distribution is the distribution of the x-intercept of a ray issuing from with a uniformly distributed angle. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero.
ShanghaiShanghai (ʃæŋˈhaɪ; , zɑ̃̀.hɛ́zh-wuu-2-上海.ogg, Standard Mandarin pronunciation: AUDZh-Shanghai.oggshang4.hai3) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flowing through it. The population of the city proper is the third most populous in the world, with 24.89 million inhabitants in 2021, while the urban area is the most populous in China, with 39,300,000 residents.
CityA city is a human settlement of a notable size. It can be defined as a permanent and densely settled place with administratively defined boundaries whose members work primarily on non-agricultural tasks. Cities generally have extensive systems for housing, transportation, sanitation, utilities, land use, production of goods, and communication. Their density facilitates interaction between people, government organizations, and businesses, sometimes benefiting different parties in the process, such as improving the efficiency of goods and service distribution.
