That's simple.I cannot see any way that the results could be recorded incorrectly due to the number of tests involved.
You don't do the tests, you make up the results and you write them on the schedule of results.
Sadly, I tend to agree; this is what an enormous number of electricians actually do.
If they do carry out the end to end tests at all, they usually then proceed to calculate a figure for (R1 + R2), rather than measure it, as they should.