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  2. 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).

  3. Correlation - Wikipedia

    en.wikipedia.org/wiki/Correlation

    The most familiar measure of dependence between two quantities is the Pearson product-moment correlation coefficient (PPMCC), or "Pearson's correlation coefficient", commonly called simply "the correlation coefficient". It is obtained by taking the ratio of the covariance of the two variables in question of our numerical dataset, normalized to ...

  4. Words of estimative probability - Wikipedia

    en.wikipedia.org/wiki/Words_of_estimative...

    Table 1: Kent's "words of estimative probability" [2] Certain 100% Give or take 0% The general area of possibility: Almost certain 93% Give or take about 6%

  5. Microsoft reports 10% quarterly profit growth as it works to ...

    www.aol.com/microsoft-reports-10-quarterly...

    Microsoft said Wednesday that its profit for the October-December quarter grew 10% as it works to capitalize on the huge amounts of money it has spent to advance its artificial intelligence ...

  6. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    Parts-per notation is often used describing dilute solutions in chemistry, for instance, the relative abundance of dissolved minerals or pollutants in water.The quantity "1 ppm" can be used for a mass fraction if a water-borne pollutant is present at one-millionth of a gram per gram of sample solution.

  7. Failure rate - Wikipedia

    en.wikipedia.org/wiki/Failure_rate

    When a collection of these devices are tested, the test will run until 10% of the units fail dangerously. FMEDA Failure modes, effects, and diagnostic analysis (FMEDA) is a systematic analysis technique to obtain subsystem / product level failure rates, failure modes and design strength. The FMEDA technique considers:

  8. ANOVA gauge R&R - Wikipedia

    en.wikipedia.org/wiki/ANOVA_gauge_R&R

    There are two important aspects of a Gage R&R: Repeatability: The variation in measurements taken by a single person or instrument on the same or replicate item and under the same conditions. [1] Reproducibility: the variation induced when different operators, instruments, or laboratories measure the same or replicated specimen. [1]

  9. Elasticity of substitution - Wikipedia

    en.wikipedia.org/wiki/Elasticity_of_substitution

    Elasticity of substitution is the ratio of percentage change in capital-labour ratio with the percentage change in Marginal Rate of Technical Substitution. [1] In a competitive market, it measures the percentage change in the two inputs used in response to a percentage change in their prices. [2]