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  2. Error analysis for the Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Error_analysis_for_the...

    Few civilian receivers have ever used the P-code, and the accuracy attainable with the public C/A code was much better than originally expected (especially with DGPS), so much so that the antispoof policy has relatively little effect on most civilian users. Turning off antispoof would primarily benefit surveyors and some scientists who need ...

  3. Three-point estimation - Wikipedia

    en.wikipedia.org/wiki/Three-point_estimation

    These values are used to calculate an E value for the estimate and a standard deviation (SD) as L-estimators, where: E = (a + 4m + b) / 6 SD = (b − a) / 6. E is a weighted average which takes into account both the most optimistic and most pessimistic estimates provided. SD measures the variability or uncertainty in the estimate.

  4. Chebyshev's inequality - Wikipedia

    en.wikipedia.org/wiki/Chebyshev's_inequality

    The one-sided variant can be used to prove the proposition that for probability distributions having an expected value and a median, the mean and the median can never differ from each other by more than one standard deviation. To express this in symbols let μ, ν, and σ be respectively the mean, the median, and the standard deviation. Then

  5. Bessel's correction - Wikipedia

    en.wikipedia.org/wiki/Bessel's_correction

    Bessel's correction. In statistics, Bessel's correction is the use of n − 1 instead of n in the formula for the sample variance and sample standard deviation, [1] where n is the number of observations in a sample. This method corrects the bias in the estimation of the population variance. It also partially corrects the bias in the estimation ...

  6. Errors and residuals - Wikipedia

    en.wikipedia.org/wiki/Errors_and_residuals

    It is remarkable that the sum of squares of the residuals and the sample mean can be shown to be independent of each other, using, e.g. Basu's theorem.That fact, and the normal and chi-squared distributions given above form the basis of calculations involving the t-statistic:

  7. 20 Businesses With the Best Military Discounts - AOL

    www.aol.com/20-businesses-best-military...

    Yeti uses the ID.me program, which integrates military discounts in one streamlined location and offers 20% off on select products. Read: 16 Splurges That Save You Money in the Long Run.

  8. GM Defense - Wikipedia

    en.wikipedia.org/wiki/GM_Defense

    GM Defense is the military product subsidiary of General Motors, headquartered in Concord, North Carolina. It focuses on defense industry needs with hydrogen fuel cell and other advanced mobility technologies. [ 2] GM Defense projects include SURUS (Silent Utility Rover Universal Superstructure), an autonomous modular platform joint project ...

  9. Ford turns 'dirty' business into a profit driver. GM and ...

    www.aol.com/ford-turns-dirty-business-profit...

    GM and Stellantis are taking notice. Michael Wayland, CNBC. August 6, 2024 at 5:04 PM. Courtesy Ford. DETROIT — A once “dirty” word, and business, in the automotive industry has become a ...