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The company was conceived as DBC Online by Data Broadcasting Corporation in the fall of 1995. [2] The marketwatch.com domain name was registered on July 30, 1997. [3] The website launched on October 30, 1997, as a 50/50 joint venture between DBC and CBS News, then run by Larry Kramer [2] and co-founder and chairman, Derek Reisfield. [4]
In time series analysis, a fan chart is a chart that joins a simple line chart for observed past data, by showing ranges for possible values of future data together with a line showing a central estimate or most likely value for the future outcomes. As predictions become increasingly uncertain the further into the future one goes, these ...
Barron's [2] [3] (stylized in all caps) is an American weekly magazine/newspaper published by Dow Jones & Company, a division of News Corp, since 1921.. Founded as Barron's National Financial Weekly in 1921 by Clarence W. Barron (1855–1928) as a sister publication to The Wall Street Journal, Barron's covers U.S. financial information, market developments, and relevant statistics.
Front page of a floppy disk controller data sheet (1979) A datasheet, data sheet, or spec sheet is a document that summarizes the performance and other characteristics of a product, machine, component (e.g., an electronic component), material, subsystem (e.g., a power supply), or software in sufficient detail that allows a buyer to understand what the product is and a design engineer to ...
An aggregate is a type of summary used in dimensional models of data warehouses to shorten the time it takes to provide answers to typical queries on large sets of data. The reason why aggregates can make such a dramatic increase in the performance of a data warehouse is the reduction of the number of rows to be accessed when responding to a ...
The four datasets composing Anscombe's quartet. All four sets have identical statistical parameters, but the graphs show them to be considerably different. Anscombe's quartet comprises four datasets that have nearly identical simple descriptive statistics, yet have very different distributions and appear very different when graphed.
In a recent study by Parsons and Shukla, [11] they interviewed data visualization designers and found that there is both a "corrective movement" in the design community to move away from minimalist design principles, but also, that designers had different definitions for what constitutes chartjunk. The authors felt that "better definitions are ...
Radar charts can distort data to some extent, especially when areas are filled in, because the area contained becomes proportional to the square of the linear measures. For example, in a chart with 5 variables that range from 1 to 100, the area contained by the polygon bounded by 5 points when all measures are 90, is more than 10% larger than ...