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## jackknife

jack·knife / ˈjakˌnīf/ • n. (pl. -knives) 1. a knife with a folding blade. 2. a dive in which the body is first bent at the waist and then straightened. 3. Statistics a method of assessing the variability of data by repeating a calculation on the sets of data obtained by removing one value from the complete set. • v. (-knifed, -knif·ing) [tr.] move (one's body) into a bent or doubled-up position: the Major jackknifed his thin body at the waist | [intr.] she jackknifed into a sitting position. ∎  [intr.] (of an articulated vehicle) bend into a V-shape in an uncontrolled skidding movement. ∎  [intr.] (of a diver) perform a jackknife.

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"jackknife." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

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"jackknife." The Oxford Pocket Dictionary of Current English. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/jackknife-0

## jackknife

jackknife A statistical technique in which, given a data set with n observations, the analysis is recalculated n times omitting each observation in turn (removed with a “jackknife”). The mean and variance of the estimated parameters in the model may be compared with those obtained from the full set. The method is related to statistical bootstrap estimation.

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"jackknife." A Dictionary of Computing. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jackknife." A Dictionary of Computing. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/jackknife

"jackknife." A Dictionary of Computing. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/jackknife

## jackknife

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"jackknife." Oxford Dictionary of Rhymes. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jackknife." Oxford Dictionary of Rhymes. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/jackknife

"jackknife." Oxford Dictionary of Rhymes. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/jackknife