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3 Definitions

Jackknife

For Jackknife we have terms and definitions in 3 topics. The topics are Ordination, Truck and Trucking.



Jackknife (Ordination)

A (usually) computer-intensive method to estimate parameters, and/or to gauge uncertainty in these estimates. The name is derived from the method that each observation is removed (i.e. cut with the knife) one at a time (or two at a time for the second-order Jackknife, and so on) in order to get a feeling for the spread of data. See Manly (1993) and Dixon (1993) for reviews of the use of the Jackknife and similar methods in ecology.


Jackknife (Truck)

To place the trailer at a very sharp angle to the tractor; one of the major causes of truck accidents


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Jackknife (Trucking)

To place the trailer at a very sharp angle to the tractor.


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