On this page
Inspect how the value was obtained
A direct source can use estimated activity or a generic factor. A value-chain source can use detailed supplier measurements. Quality depends on the actual records, methods and coverage rather than a universal ranking of scope numbers.
Compare specific data-quality dimensions
| Dimension | Question |
|---|---|
| Completeness | Which sources and periods are covered? |
| Measurement | Metered, estimated or otherwise modeled? |
| Factor fit | Unit, geography, period and method matched? |
| Traceability | Can another analyst reproduce the record? |
Retain differences inside a total
An aggregate can combine high- and low-quality components. A single scope-level total can conceal which values are uncertain or omitted. Keep a component log when the interpretation depends on those differences.
Avoid an unsupported assurance claim
A calculation with a known category is not an independently assured inventory. State what the evidence supports and which inputs remain estimates. The educational tools below perform arithmetic on entered assumptions.