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Errors and Time

Published online by Cambridge University Press:  18 January 2010

Extract

The word ‘statistics’ implies populations. The practical navigator uses the methods of statistics to reduce errors. However, he is concerned not with a number of craft but with one particular craft. He may therefore use statistical terms in a somewhat inexact fashion. For example, the navigator generally assumes that the distribution of errors is Guassian because he has no way of telling what it really is. In navigating a craft, the blunder rate tends to add large skirts to the Guassian distribution. In equipments, these skirts may be suppressed by limits in manufacturing tolerances.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 1964

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