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  2. History of statistics - Wikipedia

    en.wikipedia.org/wiki/History_of_statistics

    The difference between the mean and the median was noticed in 1669 by Chistiaan Huygens in the context of using Graunt's tables. [ 4 ] Sir William Petty , a 17th-century economist who used early statistical methods to analyse demographic data

  3. Estimation statistics - Wikipedia

    en.wikipedia.org/wiki/Estimation_statistics

    Estimation statistics, or simply estimation, is a data analysis framework that uses a combination of effect sizes, confidence intervals, precision planning, and meta-analysis to plan experiments, analyze data and interpret results. [1]

  4. Age disparity in sexual relationships - Wikipedia

    en.wikipedia.org/wiki/Age_disparity_in_sexual...

    In heterosexual sexual relationships, concepts of age disparity, including what defines an age disparity, have developed over time and vary among societies.Differences in age preferences for mates can stem from partner availability, gender roles, and evolutionary mating strategies, and age preferences in sexual partners may vary cross-culturally.

  5. Study finds the bigger the age gap, the more likely that the ...

    www.aol.com/news/2014-11-10-study-finds-the...

    The Bigger The Age Gap, The Greater The Risk Of Divorce

  6. Systems of social stratification - Wikipedia

    en.wikipedia.org/wiki/Systems_of_social...

    The eldest brother is ideally a warrior who goes out with a group of followers drawn from his father's relatives and supporters and carves for himself a new domain; the youngest brother stays at home and inherits the ritual function of guardian of the shrine and, in the case of a chief, of the madai nat." Lineage rank was also determined by ...

  7. Ranking (statistics) - Wikipedia

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

    In statistics, ranking is the data transformation in which numerical or ordinal values are replaced by their rank when the data are sorted.. For example, if the numerical data 3.4, 5.1, 2.6, 7.3 are observed, the ranks of these data items would be 2, 3, 1 and 4 respectively.

  8. Cohen's h - Wikipedia

    en.wikipedia.org/wiki/Cohen's_h

    In statistics, Cohen's h, popularized by Jacob Cohen, is a measure of distance between two proportions or probabilities. Cohen's h has several related uses: It can be used to describe the difference between two proportions as "small", "medium", or "large". It can be used to determine if the difference between two proportions is "meaningful".

  9. Higher-order statistics - Wikipedia

    en.wikipedia.org/wiki/Higher-order_statistics

    In statistics, the term higher-order statistics (HOS) refers to functions which use the third or higher power of a sample, as opposed to more conventional techniques of lower-order statistics, which use constant, linear, and quadratic terms (zeroth, first, and second powers).