994 B
994 B
name, description
| name | description |
|---|---|
| item-analysis-tool | Performs statistical analysis on assessment items including difficulty, discrimination, and distractor effectiveness. |
item-analysis-tool
Capabilities
- Calculate item difficulty indices
- Calculate point-biserial discrimination
- Analyze distractor performance
- Flag problematic items
Usage
Use this skill when:
- Analyzing pilot test data
- Reviewing item performance after administration
- Improving assessment quality
Input
Item response data (learner responses with correct/incorrect indicators).
Output
Item analysis report with:
- Difficulty index (p-value) for each item
- Discrimination index for each item
- Distractor analysis
- Items flagged for review
Limitations
- Requires response data from actual administration
- Statistical validity depends on sample size
- Does not assess content validity
Assumptions
- Response data is complete and accurate
- Minimum sample size of 30 for reliable statistics