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New Quizzes Item Analysis Report Comparison

New Quizzes Item Analysis Report Comparison

This document compares the old Item Analysis report and the new Item Analysis report available in New Quizzes. Updated user guides will be available on September 16th, 2023.



Old Report

New Report

Report Generation

Generated every 24 hours

On-demand generation

Quiz attempts (when multiple attempts are enabled)

All attempts are included

Last attempt included for each students

Quiz Analysis - Median Score

Not available


Quiz Analysis - Standard Deviation

Standard deviation represents a points-based value.

The standard deviation represents a percentage-based value to align with the mean score. This allows for a better understanding of the dispersion or spread of scores relative to the average performance.

Quiz Analysis - Cronbach’s Alpha

Random items (items added from Item Banks at random)  are included in the Cronbach’s Alpha calculation.

Random items are excluded from Cronbach’s Alpha calculation to ensure proper measurement of internal consistency

Item Analysis - Median Earned Points

Not available


Item Analysis - Discrimination Index

All students are included to calculate the discrimination index.

Students who haven’t received an item are excluded when calculating the discrimination index.

Item Analysis - Pearson Correlation Coefficient (rpb)

The point-biserial (rpb) correlation coefficient is used.

Corrected item-total correlation coefficient is used.

Performance by Quintile

Focused on individual question answers rather than reflecting students' overall quiz performance.

Not available yet.

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