Example (continued)
Value measurement techniques: Ratio estimation
The other alternatives are compared with the standard:
- 100 days is 2.5 times better than 160 days
- 30 days is 4.3 times better than 160 days
- 20 days is 4.5 times better than 160 days
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The best alternative gets 1 point. The scores of the other alternatives are obtained from the ratios:
- v(20) = 1
- v(30) = 0.22 · 4.3 = 0.95
- v(100) = 0.22 · 2.5 = 0.55
- v(160) = 1/4.5 = 0.22