GELE Adjustment Computations (Least Squares) — Error Propagation, Variance-Covariance and Error EllipsesFlash Cards
Flashcards for Error Propagation, Variance-Covariance and Error Ellipses reviewers. Front of card: a question or prompt. Back of card: the answer plus a short explanation. Every card is calibrated to the way GELE tests Error Propagation, Variance-Covariance and Error Ellipses in its Adjustment Computations (Least Squares) subtest.
Exam context
For the Geodetic Engineer Licensure Examination, Professional Regulation Commission (PRC) — Board of Geodetic Engineering tests Adjustment Computations (Least Squares) under a "Core" label, with Error Propagation, Variance-Covariance and Error Ellipses in the 5th slot across 5 chapters. GELE candidates must clear the 70% weighted average, no sub-test below 50% cut on the 2026 paper, which draws about a meaningful share of Adjustment Computations (Least Squares) questions. Date to watch: September 2026.
Error Propagation, Variance-Covariance and Error Ellipses - Flashcards
Cards
Topic
Law of Propagation of Variances
Card Id
FC001
Topic
Sum and Difference Errors
Card Id
FC002
Topic
Scaled Quantities
Card Id
FC003
Topic
Sum vs. Mean Errors
Card Id
FC004
Topic
Matrix Propagation Law
Card Id
FC005
Topic
Variance-Covariance Matrix
Card Id
FC006
Topic
Error Ellipse Concept
Card Id
FC007
Topic
Error Propagation Application
Card Id
FC008
Topic
Error Propagation for Nonlinear Functions
Card Id
FC009
Topic
Error Accumulation in Chaining
Card Id
FC010
Topic
Least-Squares Adjustment Matrix
Card Id
FC011
Topic
Eigenvalues and Error Ellipse
Card Id
FC012
Topic
Error Ellipse Shape Interpretation
Card Id
FC013
Topic
Confidence and Scale Factors
Card Id
FC014
Topic
Error Ellipse Calculation
Card Id
FC015
Topic
Correlation Coefficient
Card Id
FC016
Topic
Correlation in Network Geometry
Card Id
FC017
Topic
Variance Factor Quality Check
Card Id
FC018
Topic
Survey Mistakes and Error Ellipse Quality
Card Id
FC019
Topic
Error Propagation for Surveyed Areas
Card Id
FC020
Stored In
chapter_flashcards
Card Count
20
Summary Only
true
Topic Distribution
Error Ellipse Concepts
20%
Least Squares Adjustment
15%
Network Geometry And Quality
12%
Variance Covariance Matrices
20%
Error Propagation Fundamentals
25%
Worked Problems And Applications
8%
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