Classical Test / ITR Streamlit Dashboard

This small Streamlit app lets you upload a CSV of item responses (rows = respondents, columns = items) and computes:

• Respondent total scores (classical test score)
• Corrected item-total correlations (ITR)
• Cronbach's alpha

Files added:

• app.py: Streamlit app
• sample_responses.csv: sample data you can use to test

Run locally:

cd path\to\project
streamlit run app.py

Usage:

• Upload your CSV using the sidebar or press "Load sample_responses.csv" to load the sample file.
• Choose between "Respondent scores (Classical)" or "Item stats (ITR)" from the sidebar.
• Download results using the provided download buttons.

If you want additional metrics (item difficulty, ICC plots, or advanced reporting), tell me what you need and I can add it.