Description
Return vocabulary-checklist shares with an explicit unknown policy.
Developmental research records may encode task eligibility, known responses, observer roles and withdrawal. A flag or support share describes supplied observations and does not independently assess a child, verify consent or establish a clinical interpretation.
Return vocabulary-checklist shares with an explicit unknown policy.
When to use this tool
Use Child Vocabulary Checklist Unknown Denominator when checking explicit developmental-study record and observation rules.
How to use the tool and how it works
- Enter known, absent, unknown, includeUnknown. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read denominator, knownFraction, unknownFraction. Use the output convention below.
Return vocabulary-checklist shares with an explicit unknown policy. Require nonnegative whole known/absent/unknown and known+absent > 0; knownFraction uses the selected denominator, while unknownFraction always uses all three counts.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| known | Whether the supplied value has the stated known observation or vocabulary status. | Required. Safe integer; minimum 0. |
| absent | Absent | Required. Safe integer; minimum 0. |
| unknown | Unknown | Required. Safe integer; minimum 0. |
| includeUnknown | Include Unknown | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| denominator | Known plus absent, adding unknown only when includeUnknown is true. | Required. Safe integer. |
| knownFraction | Known Fraction | Required. Finite number. |
| unknownFraction | Unknown Fraction | Required. Finite number. |
{
"input": {
"known": 30,
"absent": 10,
"unknown": 10,
"includeUnknown": false
},
"output": {
"denominator": 40,
"knownFraction": 0.75,
"unknownFraction": 0.2
}
}Limitations and assumptions
- An entirely unknown checklist is rejected; supplied categories do not assess language ability.
- 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
Use an approved study protocol and appropriate professional assessment for participant decisions, developmental interpretation or clinical questions.
References
Similar or alternative tools
- Child Task Valid Trial Proportion
Return task administration and validity fractions on distinct denominators.
- Child Task Look Validity Share
Return valid-look duration share.