Income Index Calculator
Log income-index normalization under independently applicable same-unit/PPP/year GNIgoalposts; unclipped extrapolation explicitly retained, not market-income equivalence or published index.
Description
A normalized income index uses logarithmic position between adopted GNI goalposts.
A normalized income index uses logarithmic position between adopted GNI goalposts.1
Currency, purchasing-power basis and reference edition determine the compatible input values.
When to use Income Index Calculator
Use this tool to obtain conditionalIncomeIndex from the supplied records using the stated calculation. Establish the population, period, variable definitions, sample coverage and independently applicable instrument or calibration.
How to use Income Index Calculator and understand its results
- Establish the population, period, variable definitions, sample coverage and independently applicable instrument or calibration.
- Enter observedGniPerCapita, callerApplicableMinimumGni, callerApplicableMaximumGni, using the field meanings and rules below, then run the tool.
- Read result.conditionalIncomeIndex. Use the units and sign conventions below, and review any unknown records separately.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedGniPerCapita | Observed gni per capita | number | Required |
| callerApplicableMinimumGni | Caller applicable minimum gni | number | Required |
| callerApplicableMaximumGni | Caller applicable maximum gni | number | Required |
Require positive observed GNI and positive minimum GNI, with maximum strictly above minimum. Return the natural-log ratio of observed/minimum over maximum/minimum. Values outside the goalposts are not clamped; a resulting index can be negative or exceed one. No PPP conversion or default goalposts are supplied.
incomeIndex=ln(observedGni/minimumGni)/ln(maximumGni/minimumGni) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Calculated observation or qualified reference | object |
| result.conditionalIncomeIndex | Logarithmic position of supplied GNI between caller-established GNI goalposts; no clamping. | number |
{
"input": {
"observedGniPerCapita": 1000,
"callerApplicableMinimumGni": 100,
"callerApplicableMaximumGni": 10000
},
"output": {
"result": {
"conditionalIncomeIndex": 0.5
}
}
}Limitations and assumptions
Population definitions, survey design, calibration and observation coverage are independently established. A result describes the supplied record or conditional model without demonstrating causation, validating an instrument or supplying representative population evidence.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Human Development Index Calculator: The Human Development Index aggregates normalized health, education and income dimensions geometrically. For a complementary comparison, use Health Index Calculator: A normalized health index locates life expectancy between adopted goalposts.
References
-
Income Index Calculator — tool.io
Similar or alternative tools
- Human Development Index Calculator
The Human Development Index aggregates normalized health, education and income dimensions geometrically.
- Health Index Calculator
A normalized health index locates life expectancy between adopted goalposts.