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  2. Scott's rule - Wikipedia

    en.wikipedia.org/wiki/Scott's_Rule

    Scott's rule is a method to select the number of bins in a histogram. [1] Scott's rule is widely employed in data analysis software including R, [2] Python [3] and Microsoft Excel where it is the default bin selection method. [4]

  3. Three-point estimation - Wikipedia

    en.wikipedia.org/wiki/Three-point_estimation

    The 99.7% confidence interval for the true project work time is approximately E(project) ± 3 × SD(project) Information Systems typically uses the 95% confidence interval for all project and task estimates. [2] These confidence interval estimates assume that the data from all of the tasks combine to be approximately normal (see asymptotic ...

  4. Record linkage - Wikipedia

    en.wikipedia.org/wiki/Record_linkage

    3.2.1 Data matching. 3.3 ... 5.4 Medical practice and ... Standardization can be accomplished through simple rule-based data transformations or more complex ...

  5. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    A basic objective of the first normal form defined by Codd in 1970 was to permit data to be queried and manipulated using a "universal data sub-language" grounded in first-order logic. [1] An example of such a language is SQL , though it is one that Codd regarded as seriously flawed.

  6. Nelson rules - Wikipedia

    en.wikipedia.org/wiki/Nelson_rules

    The above eight rules apply to a chart of a variable value. A second chart, the moving range chart, can also be used but only with rules 1, 2, 3 and 4. Such a chart plots a graph of the maximum value - minimum value of N adjacent points against the time sample of the range.

  7. A sleep psychologist recommends the 3-2-1 rule to help you ...

    www.aol.com/news/3-2-1-rule-expert-020757765.html

    The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...