This is (a1-b1)/ ((a1+B1)/2) and is a way a former poster suggested I use to compare two numbers. I have done so a lot for years, but this week I began to wonder how wise that is. The problem is that really huge differences seem to be understated.
For example numbers that are 3 times as large as another number show percent differences of say 99%. Which seems to me very low.
So what is percent difference really telling you substantively. Remember this goes to audiences that know nothing of statistics or much of math.
For example numbers that are 3 times as large as another number show percent differences of say 99%. Which seems to me very low.
So what is percent difference really telling you substantively. Remember this goes to audiences that know nothing of statistics or much of math.