Cost effectiveness — Science definition
Benefit per unit of cost, which can rank options differently from total benefit — 0.15 against 0.167 litres per token here.
Where it is taught
- Designing & Evaluating a Habitat Solution — Ecological Evidence & Environmental Design, Life Science & Scientific Inquiry, Grade 7
In use
Cost effectiveness is the comparison that stops a decision being made on total performance alone: how much benefit each unit of cost buys, which can rank options differently from raw effect and is the reason both figures should be calculated.
Designing & Evaluating a Habitat Solution