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  2. Leverage (statistics) - Wikipedia

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

    The formula then divides by () to account for the fact that we remove the observation rather than adjusting its value, reflecting the fact that removal changes the distribution of covariates more when applied to high-leverage observations (i.e. with outlier covariate values). Similar formulas arise when applying general formulas for statistical ...

  3. Mechanical advantage - Wikipedia

    en.wikipedia.org/wiki/Mechanical_advantage

    The actual mechanical advantage (AMA) is the mechanical advantage determined by physical measurement of the input and output forces. Actual mechanical advantage takes into account energy loss due to deflection, friction, and wear. The AMA of a machine is calculated as the ratio of the measured force output to the measured force input,

  4. Compound lever - Wikipedia

    en.wikipedia.org/wiki/Compound_lever

    The figure on the left illustrates a compound lever formed from two first-class levers, along with a short derivation of how to compute the mechanical advantage. With the dimensions shown, the mechanical advantage, W/F can be calculated as ⁠ 10 / 3 ⁠ × ⁠ 9 / 4 ⁠ = 7.5, meaning that an applied force of 1 pound (or 1 kg) could lift a ...

  5. DFFITS - Wikipedia

    en.wikipedia.org/wiki/DFFITS

    Thus, for low leverage points, DFFITS is expected to be small, whereas as the leverage goes to 1 the distribution of the DFFITS value widens infinitely. For a perfectly balanced experimental design (such as a factorial design or balanced partial factorial design), the leverage for each point is p/n, the number of parameters divided by the ...

  6. Mechanical advantage device - Wikipedia

    en.wikipedia.org/wiki/Mechanical_advantage_device

    A simple machine that exhibits mechanical advantage is called a mechanical advantage device - e.g.: Lever: The beam shown is in static equilibrium around the fulcrum. This is due to the moment created by vector force "A" counterclockwise (moment A*a) being in equilibrium with the moment created by vector force "B" clockwise (moment B*b).

  7. Lever - Wikipedia

    en.wikipedia.org/wiki/Lever

    The mechanical advantage of a lever is the ratio of output force to input force. M A = F 2 F 1 = a b . {\displaystyle MA={\frac {F_{2}}{F_{1}}}={\frac {a}{b}}.\!} This relationship shows that the mechanical advantage can be computed from ratio of the distances from the fulcrum to where the input and output forces are applied to the lever ...

  8. Dibbles was arrested for allegedly stealing four bottles of baby formula. She spent a week in the hospital recovering from head trauma she sustained when she stumbled and fell while being chased by the Houston Police Department on May 18, according to the Houston Chronicle. Dibbles died after a seizure. Jail or Agency: Harris County; State: Texas

  9. Cook's distance - Wikipedia

    en.wikipedia.org/wiki/Cook's_distance

    In statistics, Cook's distance or Cook's D is a commonly used estimate of the influence of a data point when performing a least-squares regression analysis. [1] In a practical ordinary least squares analysis, Cook's distance can be used in several ways: to indicate influential data points that are particularly worth checking for validity; or to indicate regions of the design space where it ...