For John, BLUF: Garbage in, garbage out. Nothing to see here; just move along.
Stamp's Statistical Probability
The government [is] extremely fond of amassing great quantities of statistics. These are raised to the nth degree, the cube roots are extracted, and the results are arranged into elaborate and impressive displays. What must be kept ever in mind, however, is that in every case, the figures are first put down by a village watchman, and he puts down anything he damn well pleases.Regards — Cliff
Attributed to Sir Josiah Stamp, 1840-1941