Chart error
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Position errors in the chart caused by inaccuracies in surveying and by errors in the reference geodetic system.
- Circular error probable (CEP). The radius of a circle, centred on the measured position, inside which the true position lies with 50% confidence.
- Confidence interval. The numerical range within which an unknown is estimated to be with a given confidence.
- Confidence level. The percentage of confidence that a given statement is correct, or the percentage of confidence that a stated interval (numerical range) includes an unknown.
- Confidence limits. The extremes of a confidence interval.
