Summary

In this chapter, we explored LINQ further. Specifically, we looked at the power of LINQ to perform aggregation functions, such as averaging, summation, and counting. Also, we talked about lists of lists. You averaged the values in a list, used the Count function, worked with a list of lists, added students to the classList, and summarized the information in the classList.

In the next chapter, you will learn about tuples, which are basically collections of several values.