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  2. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    Frequency (statistics) In statistics, the frequency or absolute frequency of an event is the number of times the observation has occurred/recorded in an experiment or study. [1]: 12–19 These frequencies are often depicted graphically or in tabular form.

  3. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    Letter frequency is the number of times letters of the alphabet appear on average in written language. Letter frequency analysis dates back to the Arab mathematician Al-Kindi (c. 801 –873 AD), who formally developed the method to break ciphers. Letter frequency analysis gained importance in Europe with the development of movable type in 1450 ...

  4. Pareto chart - Wikipedia

    en.wikipedia.org/wiki/Pareto_chart

    The Pareto Chart demonstrates a power law relationship between the rank of a quality issue and that issue’s contribution to cost. This means one can find a linear relationship on a log-log plot. The purpose of the Pareto chart is to highlight the most important among a (typically large) set of factors. In quality control, Pareto charts are ...

  5. Statistics - Wikipedia

    en.wikipedia.org/wiki/Statistics

    Statistics (from German: Statistik, orig. "description of a state, a country") [1][2] is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data. [3][4][5] In applying statistics to a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a ...

  6. Statistical graphics - Wikipedia

    en.wikipedia.org/wiki/Statistical_graphics

    Statistical graphics have been central to the development of science and date to the earliest attempts to analyse data. Many familiar forms, including bivariate plots, statistical maps, bar charts, and coordinate paper were used in the 18th century. Statistical graphics developed through attention to four problems: [3]

  7. Category:Statistical charts and diagrams - Wikipedia

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

    Chernoff face. Chord diagram (information visualization) Choropleth map. Circular distribution. Contour boxplot. Control chart. Correlation diagram. Correlogram. Cumulative flow diagram.

  8. Wikipedia:Graphs and charts - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Graphs_and_charts

    The Google Chart API allows a variety of graphs to be created. Livegap Charts creates line, bar, spider, polar-area and pie charts, and can export them as images without needing to download any tools. Veusz is a free scientific graphing tool that can produce 2D and 3D plots. Users can use it as a module in Python.

  9. Frequentist inference - Wikipedia

    en.wikipedia.org/wiki/Frequentist_inference

    Frequentist inference. Frequentist inference is a type of statistical inference based in frequentist probability, which treats “probability” in equivalent terms to “frequency” and draws conclusions from sample-data by means of emphasizing the frequency or proportion of findings in the data. Frequentist inference underlies frequentist ...