Evaluation and evidence · Source reviewed; not hands-on tested
Business assumption testing
Turn a business assumption into a question, evidence plan and decision rule.
When this is useful
You need a structured decision rather than a universal marketing formula.
Required inputs
Write the claim, what observation could contradict it, the population and the smallest informative test.
Worked example — fictional
Fictional: five interviews may reveal repeated procurement barriers. They cannot establish that 60% of all target accounts share that barrier.
Original worksheet
Download our evidence worksheet; upstream diagrams and proprietary templates are not redistributed.
Put it to work
- Define the decision and gather the stated inputs.
- Apply the method while retaining uncertainty and contrary evidence.
- Choose a next observation and write the conditions for revisiting the decision.
Limits and tradeoffs
The inspected source redirects to a broader testing course. This workbook is an original evidence-planning exercise, not the publisher’s Test Card.
Worksheet preview
# Business assumption testing: original decision worksheet Attribution: Jon Bishop. CC BY 4.0. Framework source: https://www.strategyzer.com/library/the-test-card This is an original worksheet, not a copy of the source artifact. ## Decision What decision must this exercise inform? Who owns it? What evidence would change it? ## Inputs Write the claim, what observation could contradict it, the population and the smallest informative test. For each input, record: observation | source | date | affected population | confidence | unresolved question. ## Application 1. Define one concrete decision and comparison period. 2. Record evidence separately from estimates. 3. Apply the method and inspect the assumptions that drive the result. 4. State the next observation or test and its decision rule. ## Worked example — fictional Fictional: five interviews may reveal repeated procurement barriers. They cannot establish that 60% of all target accounts share that barrier. ## Limits The inspected source redirects to a broader testing course. This workbook is an original evidence-planning exercise, not the publisher’s Test Card. ## Output Decision: ___ Evidence supporting it: ___ Contradictory or missing evidence: ___ Next action and owner: ___ Revisit when: ___