RICE
Reach × Impact × Confidence / Effort — scoring model to prioritize initiatives.
When to use
When you have multiple initiatives and measurable rough estimates for reach, impact and effort.
Example
Reach: 1000 users Impact: 3 (medium) Confidence: 0.8 Effort: 5 person-weeks Score = (1000 * 3 * 0.8) / 5 = 480