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How land is measured and mapped, from distances and elevations to GPS and geographic information systems.
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From Surveying and Geomatics: Measurement errors and adjustments · Types of Errors
Why does averaging many repeated readings fail to remove a systematic error?
- Every reading is shifted the same way
- Systematic errors are always negligible
- Averaging only reduces blunders
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Answer: Every reading is shifted the same way
A systematic error biases each reading in the same direction, so the mean carries the same bias; only a correction or a changed procedure removes it.
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