Description
Calculate qc inter lot bridge one point from explicit caller-supplied inputs.
Quality records separate measured results, reference values, acceptance rules, and supporting evidence. Arithmetic consistency and record coverage can be checked against supplied criteria without establishing traceability, approving a method, or deciding product conformity.
Calculate qc inter lot bridge one point from explicit caller-supplied inputs.
When to use this tool
Use it for qc inter lot bridge one point when the required inputs and conventions are already available.
How to use the tool and how it works
- Enter oldLotSignal, newLotSignal, oldBlank, newBlank. Use the stated units and boundary conventions.
- Run the calculation. Correct any input error before interpreting a result.
- Read oldCorrected, newCorrected, ratio, difference. Inspect any known, defined, inclusion, or boundary flags before interpreting numeric values.
Subtract each lot's own blank from its signal, require the old corrected signal to be nonzero, and return the new-to-old corrected ratio and new-minus-old corrected difference.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| oldLotSignal | Old Lot Signal | Required. Finite number. |
| newLotSignal | New Lot Signal | Required. Finite number. |
| oldBlank | Old Blank | Required. Finite number. |
| newBlank | New Blank | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| oldCorrected | Old Corrected | Required. Finite number. |
| newCorrected | New Corrected | Required. Finite number. |
| ratio | Dimensionless ratio of compatible quantities under the stated formula. | Required. Finite number. |
| difference | Difference | Required. Finite number. |
{
"input": {
"oldLotSignal": 100,
"newLotSignal": 120,
"oldBlank": 10,
"newBlank": 12
},
"output": {
"oldCorrected": 90,
"newCorrected": 108,
"ratio": 1.2,
"difference": 18
}
}Limitations and assumptions
- Negative corrected signals are permitted. A one-point comparison does not estimate inter-lot bias over a range or approve interchangeability of lots.
- The field tables describe structural bounds; the mechanics also state cross-field requirements. Malformed input shapes, disallowed keys, and invalid domains cause input errors. Results must remain finite and within the declared output contract. A successful false flag or zero placeholder is distinct from an error.
- Numeric arithmetic uses binary floating point. Exact comparisons have no hidden tolerance or decimal rounding; negative zero is exported as zero. Decimal-text integer operations retain the exactness specifically stated above.
Alternative or Complementary methods
For qc inter lot bridge one point, check the source records and the supplied rule before comparing the result with another method. Use a separate evidence or method review when arithmetic consistency alone cannot establish the required conclusion.
References
Similar or alternative tools
- Control Chart One Point Standardized Gap
Compare one supplied observation to explicitly parameterized chart limits.
- QC Analyst Replicate Weight Term
Inverse-variance replicate combination under supplied independent standard uncertainties.