13.5.2. Weighting of Observations

Try these first

1. 1.

   What is weighting of observations?

   Hint

   Think about how we prioritize trustworthy data.

2. 2.

   What happens to more reliable data in weighting?

   Hint

   Consider what higher reliability means.

3. 3.

   What does weighting of observations help us achieve?

   • More accurate adjustments
   • Faster calculations
   • Higher costs

   Hint

   Think about the benefits of prioritizing quality data.

4. 4.

   Weighting based on variance involves giving more weight to observations with:

   • True
   • False

   Hint

   Circumvent potential misconceptions about the relationship.

5. 5.

   Consider three observations with variances of 3, 7, and 1. Calculate their weights and determine which observation should predominantly influence the adjusted results.

   Hint

   Remember to find the inverse of each variance.

6. 6.

   If two observations are poor quality due to higher variances but used in a critical project, discuss ways to mitigate their impact through weighting.

   Hint

   What strategies could improve data trustworthiness?