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Claim chart. A claim chart is a widely used device in patent infringement litigation. [1] It is a convenient and effective means for analyzing and presenting information regarding a patent claim. In each, typically, there are two columns: the left column contains the language of the patent claim under analysis, separated into the successive ...
Heckman correction. The Heckman correction is a statistical technique to correct bias from non-randomly selected samples or otherwise incidentally truncated dependent variables, a pervasive issue in quantitative social sciences when using observational data. [ 1] Conceptually, this is achieved by explicitly modelling the individual sampling ...
Shewhart individuals control chart. In statistical quality control, the individual/moving-range chart is a type of control chart used to monitor variables data from a business or industrial process for which it is impractical to use rational subgroups. [ 1] The chart is necessary in the following situations: [ 2]: 231.
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. [citation needed]
Pearson's correlation coefficient is the covariance of the two variables divided by the product of their standard deviations. The form of the definition involves a "product moment", that is, the mean (the first moment about the origin) of the product of the mean-adjusted random variables; hence the modifier product-moment in the name.
The correlation reflects the noisiness and direction of a linear relationship (top row), but not the slope of that relationship (middle), nor many aspects of nonlinear relationships (bottom). N.B.: the figure in the center has a slope of 0 but in that case, the correlation coefficient is undefined because the variance of Y is zero.
By the time a Japanese beetle has feasted on your favorite plant, its leaves are mere skeletons. The best method for mitigating Japanese beetles is still the old standby of manual hand removal ...
Bivariate analysis is one of the simplest forms of quantitative (statistical) analysis. [ 1] It involves the analysis of two variables (often denoted as X , Y ), for the purpose of determining the empirical relationship between them. [ 1] Bivariate analysis can be helpful in testing simple hypotheses of association.