Evaluating and Using BEMA:

Brief Electricity and Magnetism Assessment

08/04


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Table of Contents

Evaluating and Using BEMA

Background

Background

Using BEMA

Evaluating BEMA

Evaluating BEMA - Item Difficulty Index

Evaluating BEMA - Item Difficulty Index

Evaluating BEMA - Item Discrimination Index

Evaluating BEMA - Item Discrimination Index

Evaluating BEMA - Point Bi-serial Coefficient

Evaluating BEMA - Point Bi-serial Coefficient

Evaluating BEMA - Ferguson's Delta

Evaluating BEMA - Ferguson's Delta

Evaluating BEMA - Ferguson's Delta

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Summary

Conclusions

An Example from BEMA

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Evaluating BEMA - KR-20 Reliability Index

Author: Lin Ding, Robert Beichner, Ruth Chabay, & Bruce Sherwood

Email: lding@unity.ncsu.edu

Home Page: www.ncsu.edu/PER

Other information:
AAPT summer meeting, Aug 2004, Sacramento