Least Squares — Observation Equations
Least Squares — Observation Equations is the 2nd chapter of Adjustment Computations (Least Squares) for the GELE 2026. It's one of the topics PRC consistently includes in the Adjustment Computations (Least Squares) subtest, so a focused review here translates directly into a higher GELE score.
Sub-topics covered
Learning objectives
- Understand Least Squares — Observation Equations
- Practice board-style problems on Least Squares — Observation Equations
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Summary
Chapter intro, big ideas, and the exam framing you need before a deeper dive.
Concept Map
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Study Notes
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Revision Notes
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Detailed Explanation
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Slides
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Flash Cards
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Misconception Buster
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Cheat Sheet
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Memory Anchors
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Exam Answer Templates
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Previous chapter
Theory of Errors, Weights and Most Probable Value
Next chapter
Condition Equations and Figure Adjustment
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