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Daniel G. Horvitz
Daniel Goodman Horvitz (March 4, 1921 – June 1, 2008) was an American survey statistician, best known for the eponymous Horvitz-Thompson estimator. Early life and career Daniel (Dan) Horvitz was born in New Bedford, Massachusetts. He graduated with a B.S. in mathematics from the University of Massachusetts and earned a Ph.D. in statistics at Iowa State University in 1953. Horvitz-Thompson estimator Horvitz (together with Donovan J. Thompson) co-authored in 1952 a research paper that introduced what was later called the Horvitz-Thompson estimator. In the paper, an unbiased estimator for a total is proposed, given a random sample without replacement with (possibly) unequal selection probabilities of the sample units. The authors also provide a formula for the variance of this estimator and a method to unbiasedly estimate this variance. The Horvitz-Thompson estimator is still in use in modern survey statistics; the paper was therefore regarded a landmark paper in survey statis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Bedford, Massachusetts
New Bedford ( Massachusett: ) is a city in Bristol County, Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut [Massachusett writing systems, məhswatʃəwiːsət],'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England .... It is located on the Acushnet River in what is known as the South Coast (Massachusetts), South Coast region. Up through the 17th century, the area was the territory of the Wampanoag Native American people. English colonists bought the land on which New Bedford would later be built from the Wampanoag in 1652, and the original colonial settlement that would later become the city was founded by English Quakers in the late 17th century. The town of New Bedford itself was officially incorporated in 1787. During the first half of the 19th century, New Bedford was one of the world's most important whaling ports. At its economic height during this period, New Bedfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Massachusetts
The University of Massachusetts is the five-campus public university system and the only public research system in the Commonwealth of Massachusetts. The university system includes five campuses (Amherst, Boston, Dartmouth, Lowell, and a medical school in Worcester), a satellite campus in Springfield and also 25 campuses throughout California and Washington with the University of Massachusetts Global. The system administration is in Boston and Shrewsbury and is accredited by the New England Association of Schools and Colleges and across its campuses enrolls 75,065 students. Campuses The University of Massachusetts Amherst is the flagship and largest school in the UMass system. It was also the first one established, dating back to 1863, when it was founded as the Massachusetts Agricultural College. The University of Massachusetts Chan Medical School was founded in 1962, and is located in Worcester. The University of Massachusetts Boston, originally established in 1964 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iowa State University
Iowa State University of Science and Technology (Iowa State University, Iowa State, or ISU) is a public land-grant research university in Ames, Iowa. Founded in 1858 as the Iowa Agricultural College and Model Farm, Iowa State became one of the nation's first designated land-grant institution when the Iowa Legislature accepted the provisions of the 1862 Morrill Act on September 11, 1862, making Iowa the first state in the nation to do so. On July 4, 1959, the college was officially renamed Iowa State University of Science and Technology. Iowa State is classified among "R1: Doctoral Universities – Very high research activity". The university is home to the Ames Laboratory, one of ten national U.S. Department of Energy Office of Science research laboratories, the Biorenewables Research Laboratory, the Plant Sciences Institute, and various other research institutes. Iowa State is the second-largest university in the State of Iowa by undergraduate enrollment. The university's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Pittsburgh
The University of Pittsburgh (Pitt) is a public state-related research university in Pittsburgh, Pennsylvania. The university is composed of 17 undergraduate and graduate schools and colleges at its urban Pittsburgh campus, home to the university's central administration and around 28,000 undergraduate and graduate students. The 132-acre Pittsburgh campus includes various historic buildings that are part of the Schenley Farms Historic District, most notably its 42-story Gothic revival centerpiece, the Cathedral of Learning. Pitt is a member of the Association of American Universities and is classified among "R1: Doctoral Universities – Very high research activity". It is the second-largest non-government employer in the Pittsburgh metropolitan area. Pitt traces its roots to the Pittsburgh Academy founded by Hugh Henry Brackenridge in 1787. While the city was still on the edge of the American frontier at the time, Pittsburgh's rapid growth meant that a proper university ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Carolina State University
North Carolina State University (NC State) is a public land-grant research university in Raleigh, North Carolina. Founded in 1887 and part of the University of North Carolina system, it is the largest university in the Carolinas. The university forms one of the corners of the Research Triangle together with Duke University in Durham and the University of North Carolina at Chapel Hill. It is classified among "R1: Doctoral Universities – Very high research activity". The North Carolina General Assembly established the North Carolina College of Agriculture and Mechanic Arts, now NC State, on March 7, 1887, originally as a land-grant college. The college underwent several name changes and officially became North Carolina State University at Raleigh in 1965. However, by longstanding convention, the "at Raleigh" portion is usually omitted. Today, NC State has an enrollment of more than 35,000 students, making it among the largest in the country. NC State has historical streng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of North Carolina At Chapel Hill
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic Church monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word ''universitas'' (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Triangle Institute
Research Triangle Institute, trading as RTI International, is a nonprofit organization headquartered in the Research Triangle Park in North Carolina. RTI provides research and technical services. It was founded in 1958 with $500,000 in funding from local businesses and the three North Carolina universities that form the Research Triangle. RTI research has covered topics like HIV/AIDS, healthcare, education curriculum and the environment, among others. The US Agency for International Development accounts for about 35 percent of RTI's research revenue. History In 1954 a building contractor, met with the North Carolina state treasurer and the president of Wachovia to discuss building a research park in North Carolina to attract new industries to the region. They obtained support for the concept from state governor Luther Hodges and the three universities that form the research triangle: University of North Carolina at Chapel Hill, Duke University and North Carolina State Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Assessment Of Educational Progress
The National Assessment of Educational Progress (NAEP) is the largest continuing and nationally representative assessment of what U.S. students know and can do in various subjects. NAEP is a congressionally mandated project administered by the National Center for Education Statistics (NCES), within the Institute of Education Sciences (IES) of the U.S. Department of Education. The first national administration of NAEP occurred in 1969. The National Assessment Governing Board (NAGB) is an independent, bipartisan board that sets policy for NAEP and is responsible for developing the framework and test specifications.The National Assessment Governing Board, whose members are appointed by the U.S. Secretary of Education, includes governors, state legislators, local and state school officials, educators, business representatives, and members of the general public. Congress created the 26-member Governing Board in 1988. NAEP results are designed to provide group-level data on st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Randomized Response
Randomised response is a research method used in structured survey interview. It was first proposed by S. L. Warner in 1965 and later modified by B. G. Greenberg and coauthors in 1969. It allows respondents to respond to sensitive issues (such as criminal behavior or sexuality) while maintaining confidentiality. Chance decides, unknown to the interviewer, whether the question is to be answered truthfully, or "yes", regardless of the truth. For example, social scientists have used it to ask people whether they use drugs, whether they have illegally installed telephones, or whether they have evaded paying taxes. Before abortions were legal, social scientists used the method to ask women whether they had had abortions. The concept is somewhat similar to plausible deniability. Plausible deniability allows the subject to credibly say that they did not make a statement, while the randomized response technique allows the subject to credibly say that they had not been truthful when making ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Institute Of Statistical Sciences
The National Institute of Statistical Sciences (NISS) is an American institute that researches statistical science and quantitative analysis. History In 1985, the National Science Foundation funded a proposal by the Institute of Mathematical Statistics (IMS) to assess the status of cross-disciplinary statistical research and to make recommendations for its future. The IMS formed a panel consisted of twelve members from statistics, pure and applied mathematics, chemistry, engineering, computer science, and public affairs, including Ingram Olkin (Co-Chair), Jerome Sacks (Co-Chair), Alfred Blumstein, Amos Eddy, Bill Eddy, Peter C. Jurs, William Kruskal, Thomas Kutz, Gary C. McDonald, Ronald Peierls, Paul Shaman, and William Spurgeon. In 1990, the panel published a report on Cross-Disciplinary Research in the Statistical Sciences that led to the founding of the National Institute of Statistical Sciences. The National Institute of Statistical Sciences was established in 1990 and l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Statistical Association
The American Statistical Association (ASA) is the main professional organization for statisticians and related professionals in the United States. It was founded in Boston, Massachusetts on November 27, 1839, and is the second oldest continuously operating professional society in the US (only the Massachusetts Medical Society, founded in 1781, is older). The ASA services statisticians, quantitative scientists, and users of statistics across many academic areas and applications. The association publishes a variety of journals and sponsors several international conferences every year. Mission The organization's mission is to promote good application of statistical science, specifically to: * support excellence in statistical practice, research, journals, and meetings * work for the improvement of statistical education at all levels * promote the proper application of statistics * anticipate and meet member needs * use the discipline of statistics to enhance human welfare * seek o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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