- Nspire Navigator System 30user NAVNSCRK302L1 Manual
The Class Analysis Tool 241
2. If necessary, navigate to the folder where you want to save the 
analysis.
3. Type a name for the file, and then click Save.
File types used in Class Analysis
Class Analysis works with several file types.
assignment (.edc) file – A PC file containing the assignment title, the 
text and images of each item, possible responses, correct-response 
identification, and all other information for a specific assignment.
answer (.usf) file – A PC file containing a student’s answers to an 
assignment. It also includes the title of the assignment, the assignment’s 
file name, the student’s user ID, the device ID, and other information.
class analysis (.caf) file – A PC file containing everything necessary to 
review the analysis. It includes the assignment, students’ answers, 
modifications you have made, and analysis results.
AppVar files – Assignments and student answers reside on calculators as 
Application Variable (AppVar) files. Assignment AppVars have a seven-
character name. The student’s answers for an assignment are stored in an 
AppVar with the same name as the assignment, preceded by the letter 
“U.”
Glossary of terms used in Class Analysis
Assignment Type – Can be Self Check or Examination. On Self Check 
assignments, students can view the correct answers on their calculators. 
On Examination assignments, students are not permitted to view the 
correct answers (available in the Class Summary view only).
Correct Response – The text of the correct response (for fill-in-the-
blank questions) or the identifier (such as 1, 2, 3 or a, b, c) of the 
designated correct response for an item.
Correct Answer – The text of the answer represented by the Correct 
Response.
Device File Name – The AppVar name created on a calculator when a 
student begins answering assignment questions. It consists of the name 
of the assignment, preceded by the letter “U.” For example, answers for 
an assignment stored as 
HOMEWOR will have a device file name of 
UHOMEWOR. (available in the Class Summary view only).










