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  2. Pie chart - Wikipedia

    en.wikipedia.org/wiki/Pie_chart

    Square charts, also called waffle charts, are a form of pie charts that use squares instead of circles to represent percentages. Similar to basic circular pie charts, square pie charts take each percentage out of a total 100%. They are often 10 by 10 grids, where each cell represents 1%.

  3. Data and information visualization - Wikipedia

    en.wikipedia.org/wiki/Data_and_information...

    A pie chart or bar chart can show the comparison of ratios, such as the market share represented by competitors in a market. Deviation: Categorical subdivisions are compared against a reference, such as a comparison of actual vs. budget expenses for several departments of a business for a given time period.

  4. Wikipedia:Graphs and charts - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Graphs_and_charts

    Module:Chart creates bar and pie charts on Wikipedia without need for external tools; Many spreadsheet, drawing, and desktop publishing programs allow you to create graphs and export them as images. gnuplot can produce a wide variety of charts and graphs; see samples with source code at Commons. In Python using matplotlib

  5. Statistical graphics - Wikipedia

    en.wikipedia.org/wiki/Statistical_graphics

    William Playfair's trade-balance time-series chart, published in his Commercial and Political Atlas, 1786 John Snow's Cholera map in dot style, 1854. Famous graphics were designed by: William Playfair who produced what could be called the first line, bar, pie, and area charts.

  6. Chart - Wikipedia

    en.wikipedia.org/wiki/Chart

    A pie chart showing the composition of the 38th Parliament of Canada. A chart (sometimes known as a graph) is a graphical representation for data visualization, in which "the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart". [1]

  7. Category:Statistical charts and diagrams - Wikipedia

    en.wikipedia.org/wiki/Category:Statistical...

    Pages in category "Statistical charts and diagrams" The following 122 pages are in this category, out of 122 total. ... Pie chart; William Playfair; Poincaré plot;

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  9. William Playfair - Wikipedia

    en.wikipedia.org/wiki/William_Playfair

    William Playfair (22 September 1759 – 11 February 1823) was a Scottish engineer and political economist.The founder of graphical methods of statistics, [1] Playfair invented several types of diagrams: in 1786 he introduced the line, area and bar chart of economic data, and in 1801 he published what were likely the first pie chart and circle graph, used to show part-whole relations. [2]

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