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  2. Student's t-test - Wikipedia

    en.wikipedia.org/wiki/Student's_t-test

    Student's t -test. Student's t-test is a statistical test used to test whether the difference between the response of two groups is statistically significant or not. It is any statistical hypothesis test in which the test statistic follows a Student's t -distribution under the null hypothesis. It is most commonly applied when the test statistic ...

  3. International Computer Driving Licence - Wikipedia

    en.wikipedia.org/wiki/International_Computer...

    International Certification of Digital Literacy (ICDL), [1] formerly known as European Computer Driving Licence (ECDL), is a computer literacy certification program provided by ECDL Foundation, [2] a not-for-profit organisation. The ICDL / ECDL certification is a globally recognised information and communication technology (ICT) and digital ...

  4. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    In accounting, a worksheet is, or was, a sheet of ruled paper with rows and columns on which an accountant could record information or perform calculations. These are often called columnar pads, and typically green-tinted. In computing, spreadsheet software presents, on a computer monitor, a user interface that resembles one or more paper ...

  5. False discovery rate - Wikipedia

    en.wikipedia.org/wiki/False_discovery_rate

    Definitions. Based on definitions below we can define Q as the proportion of false discoveries among the discoveries (rejections of the null hypothesis): where is the number of false discoveries and is the number of true discoveries. The false discovery rate (FDR) is then simply: 1 where is the expected value of .

  6. Tukey's range test - Wikipedia

    en.wikipedia.org/wiki/Tukey's_range_test

    Tukey's range test. Tukey's range test, also known as Tukey's test, Tukey method, Tukey's honest significance test, or Tukey's HSD (honestly significant difference) test, [1] is a single-step multiple comparison procedure and statistical test. It can be used to correctly interpret the statistical significance of the difference between means ...

  7. Normality test - Wikipedia

    en.wikipedia.org/wiki/Normality_test

    Normality test. In statistics, normality tests are used to determine if a data set is well-modeled by a normal distribution and to compute how likely it is for a random variable underlying the data set to be normally distributed. More precisely, the tests are a form of model selection, and can be interpreted several ways, depending on one's ...

  8. Welch's t-test - Wikipedia

    en.wikipedia.org/wiki/Welch's_t-test

    Welch's t -test. Welch's. t. -test. In statistics, Welch's t-test, or unequal variances t-test, is a two-sample location test which is used to test the (null) hypothesis that two populations have equal means. It is named for its creator, Bernard Lewis Welch, and is an adaptation of Student's t -test, [1] and is more reliable when the two ...

  9. Multiple comparisons problem - Wikipedia

    en.wikipedia.org/wiki/Multiple_comparisons_problem

    Multiple comparisons problem. An example of coincidence produced by data dredging (uncorrected multiple comparisons) showing a correlation between the number of letters in a spelling bee's winning word and the number of people in the United States killed by venomous spiders. Given a large enough pool of variables for the same time period, it is ...

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