No. Lines are not statements.
Second stat is branch which also do not make much sense, as most of the time Erlang will use pattern match,
No, branches !== pattern matching. A single if can have several branches. This has nothing to do with pattern matching nor multi-clause functions.
The fact that in Elixir you can have multiclause functions thanks to pattern matching and avoid long if or cond statements is a nice feature, but pattern matching together with guards can only take you so far and even though all multiclause functions can be converted to if counterparts, the reverse is not possible.
I recommend you dive deeper into the world of coverage metrics. Only then will you understand that they do make sense.
