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Table 1 Probability ranges for verbal descriptions, taken from Morgan (2009)

From: Using Bayesian networks to guide the assessment of new evidence in an appeal case

Verbal term

Probability range

Virtually certain

>0.99

Very likely

0.9–0.99

Likely

0.66–0.9

Medium likelihood

0.33–0.66

Unlikely

0.1–0.33

Very unlikely

0.01–0.1

Exceptionally unlikely

<0.01