A measure of the evidence provided by the data, D, in favour of model M1 as opposed to model M2. The Bayes factor is B, given byThe value of B may be assessed with the following table, derived from that suggested by Jeffreys:
2ln(B) | evidence in favour of M1 |
---|
<0 | Negative |
0–2.2 | Not worth more than a bare mention |
2.2–6 | Positive |
6–10 | Strong |
>10 | Very strong |