Modelling theory and uncertainty: "Uncertainty Analysis"

1. What is the main objective of the uncertainty analysis of a model?
2. Main steps in uncertainty analysis
3. How to calculate the statistics of the uncertainty of the model output Main types of uncertainty;
4. Main sources of models uncertainty (on an example of a hydrologic model)
5. Relationship between actual, measured and modelled value of an environmental variable
6. What is the relationship between bias and variance, accuracy and precision