Age Crime Curve Peak Age Lookup
Find all actual matched rate maxima in independently defined age bins, not universal peak age or a prediction of individual behavior. Bin IDsand ties retained.
Description
An age-crime peak summarizes rates in an adopted set of age bands.
An age-crime peak summarizes rates in an adopted set of age bands.1
Multiple bands may share the maximum and the supplied sample does not establish a universal peak age. Use this tool to calculate the stated observation or conditional model from supplied measurements.
When to use Age Crime Curve Peak Age Lookup
Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the jurisdiction or research scope, observation and event definitions, reference date, matched period and denominator basis.
How to use Age Crime Curve Peak Age Lookup and understand its results
- Establish the jurisdiction or research scope, observation and event definitions, reference date, matched period and denominator basis.
- Enter callerAgeBandIds, independentlyMatchedObservedRates, using the field meanings and rules below, then run the tool.
- Read result.maximumObservedAgeBandIds, result.maximumObservedRate. Interpret each field using the units, signs and evidence rules below.
- If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| callerAgeBandIds | Caller age band ids | list of string | Required |
| independentlyMatchedObservedRates | Independently matched observed rates | list of number | Required |
Supply nonempty unique nonblank age-band IDs with aligned nonnegative finite rates. Return the maximum rate and every exactly tied band ID in caller order. An all-zero series is allowed and returns every band; no interpolated peak age or population inference occurs.
maximumRate=max(rates); maximumBandIds={id_i:rate_i=maximumRate} Apply the field units and exact ordering, boundary and evidence rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Structured result containing the calculation or selected reference fields below | object |
| result.maximumObservedAgeBandIds | Maximum Observed Age Band Ids; use the units, sign convention and calculation stated above | list of string |
| result.maximumObservedRate | Maximum Observed Rate; use the units, sign convention and calculation stated above | number |
{
"input": {
"callerAgeBandIds": [
"a",
"b",
"c"
],
"independentlyMatchedObservedRates": [
1,
3,
3
]
},
"output": {
"result": {
"maximumObservedAgeBandIds": [
"b",
"c"
],
"maximumObservedRate": 3
}
}
}Limitations and assumptions
Multiple bands may share the maximum and the supplied sample does not establish a universal peak age. Results depend on the independently established measurement basis and the exact model assumptions above.
Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.
Alternative or Complementary methods
Use Onset Age Escalation Severity Checker to examine a related aspect: An observed onset age is the first event age in a recorded sequence.
Use Moffitt Typology Life Course Classifier where its separate inputs and scope apply: Moffitt's developmental typology distinguishes research patterns across life stages.
References
-
Age Crime Curve Peak Age Lookup — tool.io
Similar or alternative tools
- Onset Age Escalation Severity Checker
An observed onset age is the first event age in a recorded sequence.
- Moffitt Typology Life Course Classifier
Moffitt's developmental typology distinguishes research patterns across life stages.