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Test Scoring and Analysis Using SAS®
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Test Scoring and Analysis Using SAS®
by EdD Ron Cody, Jeffrey Smith
Test Scoring and Analysis Using SAS
List of Programs
About This Book
About These Authors
Acknowledgments
Chapter 1: What This Book Is About
Introduction
An Overview of Item Analysis and Test Reliability
A Brief Introduction to SAS
Chapter 2: Reading Test Data and Scoring a Test
Introduction
Reading Data from a Text File and Scoring a Test
Explanation of Program 2.1
Reading Space-Delimited Data
Reading Comma-Delimited Data (CSV File)
Reading Data Directly from an Excel Workbook
Reading an Answer Key from a Separate File
Modifying the Program to Score a Test of an Arbitrary Number of Items
Displaying a Histogram of Test Scores
Matching Student Names with Student IDs
Creating a Fancier Roster Using PROC REPORT
Exporting Your Student Roster to Excel
Conclusion
Chapter 3: Computing and Displaying Answer Frequencies
Introduction
Displaying Answer Frequencies (in Tabular Form)
Modifying the Program to Display the Correct Answer in the Frequency Tables
Developing an Automated Program to Score a Test and Produce Item Frequencies
Displaying Answer Frequencies in Graphical Form
Conclusion
Chapter 4: Checking Your Test Data for Errors
Introduction
Detecting Invalid IDs and Answer Choices
Checking for ID Errors
Using “Fuzzy” Matching to Identify an Invalid ID
Checking for and Eliminating Duplicate Records
Conclusion
Chapter 5: Classical Item Analysis
Introduction
Point-Biserial Correlation Coefficient
Making a More Attractive Report
The Next Step: Restructuring the Data Set
Displaying the Mean Score of the Students Who Chose Each of the Multiple Choices
Combining the Mean Score per Answer Choice with Frequency Counts
Computing the Proportion Correct by Quartile
Combining All the Item Statistics in a Single Table
Interpreting the Item Statistics
Conclusion
Chapter 6: Adding Special Features to the Scoring Program
Introduction
Modifying the Scoring Program to Accept Alternate Correct Answers
Deleting Items and Rescoring the Test
Analyzing Tests with Multiple Versions (with Correspondence Information in a Text File)
Analyzing Tests with Multiple Versions (with Correspondence Information in an Excel File)
Analyzing Tests with Multiple Versions (with Correspondence Information and Student Data in an Excel File)
Conclusion
Chapter 7: Assessing Test Reliability
Introduction
Computing Split-Half Reliability
Computing Kuder-Richardson Formula 20 (KR-20)
Computing Cronbach’s Alpha
Demonstrating the Effect of Item Discrimination on Test Reliability
Demonstrating the Effect of Test Length on Test Reliability
Conclusion
Chapter 8: An Introduction to Item Response Theory - PROC IRT
Introduction
IRT basics
Looking at Some IRT Results
What We Aren’t Looking At!
Preparing the Data Set for PROC IRT
Running PROC IRT
Running Other Models
Classical Item Analysis on the 30-Item Physics Test
Conclusion
References
Chapter 9: Tips on Writing Multiple-Choice Items
Introduction
Getting Started/Organized
Types of Items for Achievement Tests
Conclusion
References
Chapter 10: Detecting Cheating on Multiple- Choice Tests
Introduction
How to Detect Cheating: Method One
How to Detect Cheating: Method Two
Searching for a Match
Conclusion
References
Chapter 11: A Collection of Test Scoring, Item Analysis, and Related Programs
Introduction
Scoring a Test (Reading Data from a Text File)
Scoring a Test (Reading Data From an Excel File)
Printing a Roster
Data Checking Program
Item Analysis Program
Program to Delete Items and Rescore the Test
Scoring Multiple Test Versions (Reading Test Data and Correspondence Data from Text Files)
Scoring Multiple Test Versions (Reading Test Data from a Text File and Correspondence Data from an Excel File)
Scoring Multiple Test Versions (Reading Test Data and Correspondence Data from Excel Files)
KR-20 Calculation
Program to Detect Cheating (Method One)
Program to Detect Cheating (Method Two)
Program to Search for Possible Cheating
Conclusion
Index
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