First mention of function

[lgatto]

Replace

b <- sqrt(a)

with

b <- sqrt(4)

so as to make the code executable and/or provide more context for learners that work through the lesson on their own.

[lgatto]

Further comment from Maria:

Yes it’s a good point, I had a look at the lesson it was adapted from https://datacarpentry.org/R-ecology-lesson/01-intro-to-r.html and they have

weight_kg <- sqrt(10) 

which follows better to me to what went before (creating and using weight_kg), so maybe could use that too?