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  2. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The table shown on the right can be used in a two-sample t-test to estimate the sample sizes of an experimental group and a control group that are of equal size, that is, the total number of individuals in the trial is twice that of the number given, and the desired significance level is 0.05. [4]

  3. Weighted median - Wikipedia

    en.wikipedia.org/wiki/Weighted_median

    In statistics, a weighted median of a sample is the 50% weighted percentile. [1] [2] [3] It was first proposed by F. Y. Edgeworth in 1888. [4] [5] Like the median, it is useful as an estimator of central tendency, robust against outliers. It allows for non-uniform statistical weights related to, e.g., varying precision measurements in the sample.

  4. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    The simplest case of a normal distribution is known as the standard normal distribution or unit normal distribution. This is a special case when μ = 0 {\textstyle \mu =0} and σ 2 = 1 {\textstyle \sigma ^{2}=1} , and it is described by this probability density function (or density): φ ( z ) = e − z 2 2 2 π . {\displaystyle \varphi (z ...

  5. Inverse probability weighting - Wikipedia

    en.wikipedia.org/wiki/Inverse_probability_weighting

    Inverse probability weighting is a statistical technique for estimating quantities related to a population other than the one from which the data was collected. Study designs with a disparate sampling population and population of target inference (target population) are common in application. [1]

  6. Classification of obesity - Wikipedia

    en.wikipedia.org/wiki/Classification_of_obesity

    [6] [7] [3] Other measurements of fat distribution include the waist–hip ratio and body fat percentage. Normal weight obesity is a condition of having normal body weight, but high body fat percentages with the same health risks of obesity. [8] [9] BMI can be used to predict the risk of metabolic abnormalities like diabetes. [10]

  7. Why Caitlin Clark Was 'So Upset' in the Moments After ... - AOL

    www.aol.com/lifestyle/why-caitlin-clark-upset...

    Caitlin Clark recalled the moment she felt "so upset" after being selected first overall in the 2024 WNBA draft.. During an appearance on the Nov. 5th episode of the Fresh Talk podcast — which ...

  8. Standard normal table - Wikipedia

    en.wikipedia.org/wiki/Standard_normal_table

    Example: To find 0.69, one would look down the rows to find 0.6 and then across the columns to 0.09 which would yield a probability of 0.25490 for a cumulative from mean table or 0.75490 from a cumulative table. To find a negative value such as -0.83, one could use a cumulative table for negative z-values [3] which yield a probability of 0.20327.

  9. 'Disgruntled ex-employee' kills 2 workers at Chicago's Navy ...

    www.aol.com/disgruntled-ex-employee-kills-2...

    A man who was recently fired from his job at Navy Pier, one of Chicago’s main tourist attractions, returned to his former workplace and killed two people before fleeing, according to police.