Description
Separate total assessment weight into scored and unscored portions.
Assessment coverage can refer to scored items, applicable items, observation counts or total weights. A support share depends on those choices and is separate from a final score, a validated scale or an inference about a learner.
Separate total assessment weight into scored and unscored portions.
When to use this tool
Use Test Item Unscored Weight Budget when checking an explicit assessment or observation-support denominator.
How to use the tool and how it works
- Enter weights, scored. Keep parallel arrays aligned. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read scoredWeight, unscoredWeight. Use the output convention below.
Require equally long nonnegative weights and scored flags. scoredWeight sums weights whose flag is true; unscoredWeight sums the rest.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| weights | Position-aligned nonnegative weights under the specified model convention. | Required. Array of finite number; maximum items 256. |
| scored | Scored | Required. Array of boolean; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| scoredWeight | Scored Weight | Required. Finite number. |
| unscoredWeight | Unscored Weight | Required. Finite number. |
{
"input": {
"weights": [
1,
2,
3
],
"scored": [
true,
false,
true
]
},
"output": {
"scoredWeight": 4,
"unscoredWeight": 2
}
}Limitations and assumptions
- Weights are supplied scoring importance, not necessarily item counts or a full score. No missing-item policy, scale validity or fairness conclusion 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
Review the assessment design, missing-item policy and observation method before interpreting coverage as valid achievement evidence.
References
Similar or alternative tools
- Item Observation Support Share
applicableWeight sums applicable items; observedWeight additionally requires observed.
- Question Bank Exposure One Item Term
exposureFraction = seen/administrations.