I've got: 

```
Dictionary<string, List<double>> studentRecords = ...;

foreach (var pair in studentRecords)
{
    Console.Write($"{pair.Key} -> {string.Join(" ", pair.Value)}");
    ...
}

```

What I'm trying to do is print the `pair.Value` to the 2nd digit after the decimal, but nothing I've tried works. I tried `Math.Round`, `string.Format`, even tried doing it with a lambda expression to no avail. I seem to be doing something wrong, would appreciate any advice