4-1.2 Odds of field value disagreement.
From the theorem of total probability it follows that disagreement ratio be #2 ÷ (#2 + #4).
Similarly the disagreement odds translate directly from the disagreement ratio:
 | (4.3) |
This then gives us the disagreement odds in equation (4.3). As the value of the probability that the
comparison is a match approaches zero, these odds also diminish, though the coincidence value
becomes more important.
