Description
Calculate visible observation time as a supplied scheduled-time fraction.
Developmental records distinguish calendar age, supplied age corrections, observation states, assent and privacy choices. A corrected age can be negative under supplied assumptions, and a missing response differs from an observed zero. A display mask changes presentation without protecting the underlying record.
Calculate visible observation time as a supplied scheduled-time fraction.
When to use this tool
Use Play Observation Visible Minute Fraction when you already have visibleMinutes, scheduledMinutes and need to calculate visible observation time as a supplied scheduled-time fraction.
How to use the tool and how it works
- Enter visibleMinutes, scheduledMinutes. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read visibleFraction, notVisibleMinutes. Use the output convention below.
Require scheduled minutes>0 and visible minutes within total; return visible/scheduled and total-visible.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| visibleMinutes | Visible Minutes | Required. Finite number; minimum 0. |
| scheduledMinutes | Scheduled Minutes | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| visibleFraction | Visible Fraction | Required. Finite number. |
| notVisibleMinutes | Not Visible Minutes | Required. Finite number. |
{
"input": {
"visibleMinutes": 18,
"scheduledMinutes": 24
},
"output": {
"visibleFraction": 0.75,
"notVisibleMinutes": 6
}
}Limitations and assumptions
- Visibility is supplied and not equivalent to valid observation or missing-at-random exposure. No behavior, learning or developmental finding is inferred.
- 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 the complete observation or assessment method, age convention and consent context. Review source records and data protection together; local counts, labels and geometric measurements do not establish development, diagnosis or appropriate support.
References
Similar or alternative tools
- Supervised Play Session Duration Remaining
Calculate signed remaining time in a supplied supervised-play session.
- Child Observation Interval Missed Code
Preserve a supplied reason for a missed child-study observation interval.