THE NUMBERS, EXPLAINED
How to use this calculator.
Check-log arithmetic under a user-entered tolerance; not calibration or regulatory approval.
Start with your inputs
Enter reference masses (g), observed scale readings (g), allowed absolute error (g). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Reference masses (g) | 100,500 |
| Observed scale readings (g) | 101,497 |
| Allowed absolute error (g) | 2 |
A worked example
With the example inputs above, signed errors (g) is 1, -3. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Signed errors (g) | 1, -3 |
| Checks outside entered tolerance | 1 |
| Maximum absolute error (g) | 3 |
How this is calculated
Signed errors (g)
Subtract each reference mass from the observed reading.
Checks outside entered tolerance
Count absolute errors greater than the supplied tolerance.
Maximum absolute error (g)
Find the largest absolute difference.
Symbols and units
- a
- Reference masses (g)
- b
- Observed scale readings (g)
- c
- Allowed absolute error (g)
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
Check-log arithmetic under a user-entered tolerance; not calibration or regulatory approval.
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?
Signed errors (g); Checks outside entered tolerance; Maximum absolute error (g). 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: Check-log arithmetic under a user-entered tolerance; not calibration or regulatory approval.
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
OpenStax: Measures of the Center of the Data ↗
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 →