(ch:PartIIProblems)=
# Problems for Part II

In this chapter we collect various problems to build intuition or gain practice in the topics covered in Part II. 

* [](./problem-model-selection-basics.ipynb) explores model selection via evidence calculations, using as a prototypical problem the number of terms in a Taylor series that provide the best to some (noisy) data in a finite range.

* [](./problem-evidence-calculation-for-eft-expansions.ipynb) has a series of tasks looking at evidence for expansions based on effective field theories.

* [](./problem-model-selection-how-many-lines-ptemcee.ipynb) explores model selection with a problem to infer how many signal peaks there are in a noisy set of data.