Description
Multiply baseline by relativeOffset for offset and by 1 + relativeOffset for adjusted.
A proportion is a ratio with a defined numerator and denominator. Fractions, percentages, and per-mille values use different scales, while a signed deviation also depends on which value is treated as the reference.
Multiply baseline by relativeOffset for offset and by 1 + relativeOffset for adjusted.
When to use this tool
Use Proportional Offset From Baseline when you need a clearly defined ratio, retained share, or signed proportional component.
How to use the tool and how it works
- Enter baseline, relativeOffset. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read offset, adjusted. Use the output convention below.
Multiply baseline by relativeOffset for offset and by 1 + relativeOffset for adjusted.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| baseline | Baseline | Required. Finite number. |
| relativeOffset | Relative Offset | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| offset | Offset | Required. Finite number. |
| adjusted | Adjusted | Required. Finite number. |
{
"input": {
"baseline": 80,
"relativeOffset": 0.25
},
"output": {
"offset": 20,
"adjusted": 100
}
}Limitations and assumptions
- The offset is a signed fraction and no domain restriction prevents negative values; percent inputs must be converted before use.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Write out the numerator, denominator, and reporting scale when comparing this result with another indicator.
References
Similar or alternative tools
- Signed Reference Deviation Scalar
Require positive scale and return (value - reference)/scale as deviation.
- Policy Target Baseline Gap
Return target - baseline, observed - baseline, and target - observed as targetChange, achievedChange, and remainingGap.