Practice Adjustment Of Observations (13.5) - Errors and Adjustments

Practise this section

8 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the Principle of Least Squares?
Show hintHide hint
Think about the errors in your measurements.
Question 2.
Why do we weight observations?
Show hintHide hint
Consider the accuracy of different sources of data.
3Question 3.
What is the main goal of the Principle of Least Squares?
- To maximize residuals
- To minimize residuals
- To equalize residuals
Show hintHide hint
Focus on what the method optimizes.
4Question 4.
True or False: We assign weights to observations based on their reliability.
- True
- False
Show hintHide hint
Think about why some measurements are trusted more than others.
Question 5.
If a set of observations yields the following residuals: [-2, 3, 1], calculate the total sum of the squared residuals and explain why this is significant for adjustments.
Show hintHide hint
Recall how squaring helps in error calculations.
Question 6.
A geospatial study consists of observations with variances: 1, 2, and 4. If you find that the high variance observations may mislead, how would you adjust them?
Show hintHide hint
Consider why variance matters in weighting.

4 more questions in this section. Enroll free to practise them all.