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  2. USMLE Step 3 - Wikipedia

    en.wikipedia.org/wiki/USMLE_Step_3

    Step 3 is the final exam in the USMLE series of examinations. It is part of the licensing requirements for Doctors of Medicine (M.D.), including international medical graduates aiming to practice medicine in the United States. Generally, it is a pre-requisite of the majority of the state licensing boards.

  3. Correlation coefficient - Wikipedia

    en.wikipedia.org/wiki/Correlation_coefficient

    A correlation coefficient is a numerical measure of some type of linear correlation, meaning a statistical relationship between two variables. [ a ] The variables may be two columns of a given data set of observations, often called a sample , or two components of a multivariate random variable with a known distribution .

  4. Rank correlation - Wikipedia

    en.wikipedia.org/wiki/Rank_correlation

    A rank correlation coefficient measures the degree of similarity between two rankings, and can be used to assess the significance of the relation between them. For example, two common nonparametric methods of significance that use rank correlation are the Mann–Whitney U test and the Wilcoxon signed-rank test .

  5. Twelve Steps and Twelve Traditions - Wikipedia

    en.wikipedia.org/wiki/Twelve_Steps_and_Twelve...

    Twelve Steps and Twelve Traditions is a 1953 book, which explains the 24 basic principles of Alcoholics Anonymous and their application. [1] The book dedicates a chapter to each step and each tradition, providing a detailed interpretation of these principles for personal recovery and the organization of the group. [2]

  6. Concordance correlation coefficient - Wikipedia

    en.wikipedia.org/wiki/Concordance_correlation...

    The concordance correlation coefficient is nearly identical to some of the measures called intra-class correlations.Comparisons of the concordance correlation coefficient with an "ordinary" intraclass correlation on different data sets found only small differences between the two correlations, in one case on the third decimal. [2]

  7. SQ3R - Wikipedia

    en.wikipedia.org/wiki/SQ3R

    Try recalling and identifying major points (heading/subheadings) and answers to questions from the "Q" step. This recital step may be done either in an oral or written format and is related to the benefits of retrieval (testing effect) in boosting long-term memory for the material. Review (R 3) The final "R" is "Review."

  8. Coefficient of determination - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_determination

    Ordinary least squares regression of Okun's law.Since the regression line does not miss any of the points by very much, the R 2 of the regression is relatively high.. In statistics, the coefficient of determination, denoted R 2 or r 2 and pronounced "R squared", is the proportion of the variation in the dependent variable that is predictable from the independent variable(s).

  9. Covariance matrix - Wikipedia

    en.wikipedia.org/wiki/Covariance_matrix

    An entity closely related to the covariance matrix is the matrix of Pearson product-moment correlation coefficients between each of the random variables in the random vector , which can be written as ⁡ = (⁡ ()) (⁡ ()), where ⁡ is the matrix of the diagonal elements of (i.e., a diagonal matrix of the variances of for =, …,).