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  2. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    If there is a need to write the implied uncertainty of a number, then it can be written as with stating it as the implied uncertainty (to prevent readers from recognizing it as the measurement uncertainty), where x and σ x are the number with an extra zero digit (to follow the rules to write uncertainty above) and the implied uncertainty of it ...

  3. Experimental uncertainty analysis - Wikipedia

    en.wikipedia.org/wiki/Experimental_uncertainty...

    The model used to convert the measurements into the derived quantity is usually based on fundamental principles of a science or engineering discipline. The uncertainty has two components, namely, bias (related to accuracy) and the unavoidable random variation that occurs when making repeated measurements (related to precision).

  4. SigFig (company) - Wikipedia

    en.wikipedia.org/wiki/SigFig_(company)

    SigFig (formerly Wikinvest) is a financial technology company based in San Francisco that builds robo-advisory and customer engagement software. SigFig's robo advice platform is available directly to consumers via web and mobile app. SigFig also white-labels its platforms to financial institutions, including Wells Fargo and UBS.

  5. Propagation of uncertainty - Wikipedia

    en.wikipedia.org/wiki/Propagation_of_uncertainty

    Any non-linear differentiable function, (,), of two variables, and , can be expanded as + +. If we take the variance on both sides and use the formula [11] for the variance of a linear combination of variables ⁡ (+) = ⁡ + ⁡ + ⁡ (,), then we obtain | | + | | +, where is the standard deviation of the function , is the standard deviation of , is the standard deviation of and = is the ...

  6. SigFig - Wikipedia

    en.wikipedia.org/wiki/Sigfig

    Significant figures, the digits of a number that carry meaning contributing to its measurement resolution Topics referred to by the same term This disambiguation page lists articles associated with the title SigFig .

  7. Robust decision-making - Wikipedia

    en.wikipedia.org/wiki/Robust_decision-making

    Robust decision methods seem most appropriate under three conditions: when the uncertainty is deep as opposed to well characterized, when there is a rich set of decision options, and the decision challenge is sufficiently complex that decision-makers need simulation models to trace the potential consequences of their actions over many plausible ...

  8. Uncertainty - Wikipedia

    en.wikipedia.org/wiki/Uncertainty

    Uncertainty or incertitude refers to situations involving imperfect or unknown information. It applies to predictions of future events, to physical measurements that are already made, or to the unknown. Uncertainty arises in partially observable or stochastic environments, as well as due to ignorance, indolence, or both. [1]

  9. Codd's 12 rules - Wikipedia

    en.wikipedia.org/wiki/Codd's_12_rules

    Codd's twelve rules [1] are a set of thirteen rules (numbered zero to twelve) proposed by Edgar F. Codd, a pioneer of the relational model for databases, designed to define what is required from a database management system in order for it to be considered relational, i.e., a relational database management system (RDBMS).