The one-period newsvendor model starts with a finite demand distribution.

highlighted = computed this step

Low demand

Demand 1 has probability 1/4.

P(D=1)=1/4P(D=1)=1/4
Demand distributionDemand is a pinned finite distribution.demand probabilitiesdemandprobabilitylow11/4middle21/2high31/4

Middle demand

Demand 2 has probability 1/2.

P(D=2)=1/2P(D=2)=1/2
Demand distributionDemand is a pinned finite distribution.demand probabilitiesdemandprobabilitylow11/4middle21/2high31/4

High demand

Demand 3 has probability 1/4.

P(D=3)=1/4P(D=3)=1/4
Demand distributionDemand is a pinned finite distribution.demand probabilitiesdemandprobabilitylow11/4middle21/2high31/4

Finite demand

This is a pinned one-period distribution, not a forecast made by the lesson.

finite pinned distribution\text{finite pinned distribution}
Demand distributionDemand is a pinned finite distribution.demand probabilitiesdemandprobabilitylow11/4middle21/2high31/4