In the same article we hear that Andy Burnham (mayor of G Manchester) says that my borough has a better testing regime, run by the military in the town centre, than the others. So I'm puzzled. If all the boroughs have differing testing records, how can they be compared in a league table? For these figure to make any kind of sense, shouldn't everyone be carrying out tests of the same numbers of people in proportion to their populations?
My grasp of maths is shaky, so maybe I've got this all wrong. But we're not comparing like with like here, are we? The ones testing most will have a more accurate result than the rest. Some of the others, those testing least, might be way off the mark because of fewer tests. Have I got this right?