THE NUMBERS, EXPLAINED
How to use this calculator.
Each row identifies one supplied component-state combination. Checks are counted once within rows; required inventory and test correctness are external.
Start with your inputs
Enter required regression checks per component-state (counts), executed checks per component-state (counts), failing checks per component-state (counts). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Required regression checks per component-state (counts) | 3,2,4 |
| Executed checks per component-state (counts) | 3,1,4 |
| Failing checks per component-state (counts) | 0,1,2 |
A worked example
With the example inputs above, uncovered check counts by state is 0, 1, 0. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Uncovered check counts by state | 0, 1, 0 |
| Component-state rows with failing checks | 2, 3 |
| Required checks executed (%) | 88.888889 |
| Required checks passing (%) | 55.555556 |
How this is calculated
Uncovered check counts by state
Subtract executed checks from required checks.
Component-state rows with failing checks
List rows with one or more failures.
Required checks executed (%)
Divide executed checks by all required checks.
Required checks passing (%)
Divide executed nonfailing checks by all required checks, including uncovered checks in denominator.
Symbols and units
- a
- Required regression checks per component-state (counts)
- b
- Executed checks per component-state (counts)
- c
- Failing checks per component-state (counts)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Each row identifies one supplied component-state combination. Checks are counted once within rows; required inventory and test correctness are external.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Uncovered check counts by state; Component-state rows with failing checks; Required checks executed (%); Required checks passing (%). The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Each row identifies one supplied component-state combination. Checks are counted once within rows; required inventory and test correctness are external.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →