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  2. Radar chart - Wikipedia

    en.wikipedia.org/wiki/Radar_chart

    The radar chart is a chart and/or plot that consists of a sequence of equi-angular spokes, called radii, with each spoke representing one of the variables. The data length of a spoke is proportional to the magnitude of the variable for the data point relative to the maximum magnitude of the variable across all data points.

  3. Help:List - Wikipedia

    en.wikipedia.org/wiki/Help:List

    ''Title of list:'' example 1, example 2, example 3 Title of list: example 1, example 2, example 3 This style requires less space on the page, and is preferred if there are only a few entries in the list, it can be read easily, and a direct edit point is not required. The list items should start with a lowercase letter unless they are proper nouns.

  4. Contingency table - Wikipedia

    en.wikipedia.org/wiki/Contingency_table

    C suffers from the disadvantage that it does not reach a maximum of 1.0, notably the highest it can reach in a 2 × 2 table is 0.707 . It can reach values closer to 1.0 in contingency tables with more categories; for example, it can reach a maximum of 0.870 in a 4 × 4 table.

  5. Partial regression plot - Wikipedia

    en.wikipedia.org/wiki/Partial_regression_plot

    Velleman and Welsch [1] list the following useful properties for this plot: The least squares linear fit to this plot has an intercept of 0 and a slope β i {\displaystyle \beta _{i}} , where β i {\displaystyle \beta _{i}} corresponds to the regression coefficient for X i of a regression of Y on all of the covariates.

  6. Stata - Wikipedia

    en.wikipedia.org/wiki/Stata

    Whereas Stata/MP allows for built-in parallel processing of certain commands, Stata/SE and Stata/BE are bottlenecked and limit usage to only one single core. [19] Stata/MP runs certain commands about 2.4 times faster, roughly 60% of theoretical maximum efficiency, when running parallel processes on four CPU cores compared to SE or BE versions. [19]

  7. Covariance and correlation - Wikipedia

    en.wikipedia.org/wiki/Covariance_and_correlation

    With any number of random variables in excess of 1, the variables can be stacked into a random vector whose i th element is the i th random variable. Then the variances and covariances can be placed in a covariance matrix, in which the (i, j) element is the covariance between the i th random variable and the j th one.

  8. Seemingly unrelated regressions - Wikipedia

    en.wikipedia.org/wiki/Seemingly_unrelated...

    Here i represents the equation number, r = 1, …, R is the individual observation, and we are taking the transpose of the column vector. The number of observations R is assumed to be large, so that in the analysis we take R → ∞ {\displaystyle \infty } , whereas the number of equations m remains fixed.

  9. Cochrane–Orcutt estimation - Wikipedia

    en.wikipedia.org/wiki/Cochrane–Orcutt_estimation

    The transformation suggested by Cochrane and Orcutt disregards the first observation of a time series, causing a loss of efficiency that can be substantial in small samples. [3] A superior transformation, which retains the first observation with a weight of ( 1 − ρ 2 ) {\displaystyle {\sqrt {(1-\rho ^{2})}}} was first suggested by Prais and ...