In statistics, the jackknife (jackknife cross-validation) is a cross-validation technique and, therefore, a form of resampling. It is especially useful for bias and variance estimation.

The meaning of JACKKNIFE is a large strong pocketknife. How to use jackknife in a sentence.

Now we just use jackknife estimation to calculate the eight b(i) replications, take their mean to get b( ), and calculate the bias and standard errors using b, b(i), and b( ).

Jul 23, 2025 · Jackknife resampling is a classic statistical technique used to estimate the bias and variance of a statistic, particularly when the sample size is small or the theoretical distribution of an …

Oct 17, 2025 · The jackknife position, also known as the Kraske position, is a variation of the prone position used in certain types of surgery. It involves positioning an individual on their stomach (i.e., …

resembling a jackknife, as in its shape, function, or manner of opening and folding

jackknife noun [C] (JUMP) a dive (= jump into water, with your head and arms going in first) in which the diver, while in the air, bends from the waist to touch the toes without bending the legs, and then …

Feb 23, 2021 · A jackknife is a clasp knife, one where the blade folds into the handle. Clasp knives have been around since antiquity, but the term jackknife dates to the mid seventeenth century and arose …

May 16, 2024 · What Is a Jackknife? A jackknife is a knife that has a mechanism that allows the blade to fold inward when not in use. It was invented in 1711 by Jacque de Liege as a way to safely carry a …

Jul 16, 2025 · Learn what a jackknife truck accident is, what causes it, and who may be liable. Legal guidance may help victims seek compensation.