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Practice

Order an allocation workflow

Order a reliable proportional-allocation workflow.

Combination math map

Use equal weights only when the observations are equally weighted

Simple mean

NumeratorSum of values
DenominatorEqual count

Weighted mean

NumeratorΣ value × weight
DenominatorΣ weights

Allocation

ShareWhole × part/total
CheckParts + remainder

Weighted means preserve quantities, proportional allocations preserve shares, and a remainder check reconnects every part to the original whole.

Arrange in the correct order
  1. 1. Reconcile allocated parts and any rounding remainder
  2. 2. Multiply the whole by each share over total weight
  3. 3. Sum the share weights
  4. 4. List the stated share weights
  5. 5. Define the whole amount and its unit