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  2. Margin of error - Wikipedia

    en.wikipedia.org/wiki/Margin_of_error

    This interval is called the confidence interval, and the radius (half the interval) is called the margin of error, corresponding to a 95% confidence level. Generally, at a confidence level , a sample sized of a population having expected standard deviation has a margin of error

  3. Relative change and difference - Wikipedia

    en.wikipedia.org/wiki/Relative_change_and_difference

    This is a big difference from getting a positive percent error, which means the experimental value is a velocity that is greater than the speed of light (violating the theory of relativity) and is a newsworthy result.

  4. Root-mean-square deviation - Wikipedia

    en.wikipedia.org/wiki/Root-mean-square_deviation

    Formula. The RMSD of an estimator ^ with respect to an estimated parameter is defined as the square root of the mean square error: ⁡ (^) = ⁡ (^) = ⁡ ((^)). For an unbiased estimator, the RMSD is the square root of the variance, known as the standard deviation.

  5. Deviation (statistics) - Wikipedia

    en.wikipedia.org/wiki/Deviation_(statistics)

    In mathematics and statistics, deviation is a measure of difference between the observed value of a variable and some other value, often that variable's mean.The sign of the deviation reports the direction of that difference (the deviation is positive when the observed value exceeds the reference value).

  6. 2012 Formula One World Championship - Wikipedia

    en.wikipedia.org/wiki/2012_Formula_One_World...

    The 2012 FIA Formula One World Championship was the 66th season of FIA Formula One motor racing. It featured the 63rd FIA Formula One World Championship, a motor racing series for Formula One cars, recognised by the Fédération Internationale de l'Automobile (FIA) – the governing body of motorsport – as the highest class of competition for open-wheel racing cars.

  7. Internal rate of return - Wikipedia

    en.wikipedia.org/wiki/Internal_rate_of_return

    For example, using the stream of payments {−4000, 1200, 1410, 1875, 1050} and initial guesses = and = the secant formula with correction gives an IRR estimate of 14.2% (0.7% error) as compared to IRR = 13.2% (7% error) from the secant method.

  8. Humidity - Wikipedia

    en.wikipedia.org/wiki/Humidity

    Specific humidity. Specific humidity (or moisture content) is the ratio of the mass of water vapor to the total mass of the air parcel. Specific humidity is approximately equal to the mixing ratio, which is defined as the ratio of the mass of water vapor in an air parcel to the mass of dry air for the same parcel.

  9. Caldor - Wikipedia

    en.wikipedia.org/wiki/Caldor

    Caldor, Inc. was a discount department store chain founded in 1951 by husband and wife Carl and Dorothy Bennett. Referred to by many as the Bloomingdale's of discounting, Caldor grew from a second story "Walk-Up-&-Save" operation in Port Chester, New York into a regional retailing giant.