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In statistical data analysis the total sum of squares (TSS or SST) is a quantity that appears as part of a standard way of presenting results of such analyses.For a set of observations, ,, it is defined as the sum over all squared differences between the observations and their overall mean ¯.: [1]
The general regression model with n observations and k explanators, the first of which is a constant unit vector whose coefficient is the regression intercept, is = + where y is an n × 1 vector of dependent variable observations, each column of the n × k matrix X is a vector of observations on one of the k explanators, is a k × 1 vector of true coefficients, and e is an n× 1 vector of the ...
In statistics, the explained sum of squares (ESS), alternatively known as the model sum of squares or sum of squares due to regression (SSR – not to be confused with the residual sum of squares (RSS) or sum of squares of errors), is a quantity used in describing how well a model, often a regression model, represents
In statistics, expected mean squares (EMS) are the expected values of certain statistics arising in partitions of sums of squares in the analysis of variance (ANOVA). They can be used for ascertaining which statistic should appear in the denominator in an F-test for testing a null hypothesis that a particular effect is absent.
The Social Security administration rolled out a new version of its online benefits calculator today. The new version of the benefits calculator requires less input from the user by making use of ...
(This figure was reached using the AARP’s Social Security calculator.) Presuming the retiree has no savings and would rely on Social Security alone, that’s dangerously near the U.S. Department ...
Algorithms for calculating variance play a major role in computational statistics. A key difficulty in the design of good algorithms for this problem is that formulas for the variance may involve sums of squares, which can lead to numerical instability as well as to arithmetic overflow when dealing with large values.
Social Security Administration. Understandably, the most detailed calculator on this list comes directly from the Social Security Administration. You’ll have the same basic information available ...