# Class 26: Discussion of Exam 1

Reading: Files. Reading: Notes on exam 1. Lab: Files. Back to Introduction to Files. On to Vectors.

Held Wednesday, March 7, 2001

Summary

Today we consider some key issues from exam 1 and then continue work from the previous class.

Notes

• I've written a short survey for you to fill out.
• Fill out the survey.
• As that suggests, I've graded exam 1.
• Well, to be more precise, I've graded the exams that were turned in at 9 a.m. last Friday. The other exams will be returned next Monday (or so I hope).
• I've also prepared some notes on the exam.
• I strongly discourage you from discussing your grade with your colleagues. You should feel satisfied (or dissatisfied) with your grade based on your own assessment of what you know and what you think you should know.
• Are there any questions on homework 4?
• Are there any questions on lab writeup 2?
• The strange association list question assumes that each entry in your association list has the form `((key1 key2 key3) value)` For example,
```(define people
(list (list (list 'sam 'michelle 'william 'jonathan 'tbd) 'rebelsky)
(list (list 'john 'barbara 'neal 'sophia) 'stone)
(list (list 'ben 'suzette) 'gum)
(list (list 'henry 'terry 'barbara) 'walker)))
(define majors
(list (list (list 'recursive 'complex 'dual-brained 'mathematical) 'cs)
(list (list 'world-describing 'mathematical 'first-name) 'physics)
(list (list 'mathematical 'applicable 'monetary) 'economics)))
```
• Once again, I'm behind in preparing readings. I'll send out email if I finally get the reading done.

Overview

• Notes on exam 1
• Files lab

## Notes on Exam1

• I do not report averages, maxes, minimums, medians, or any other statistics on my exams. I think you should judge your work in terms of your own skills and expectations.
• There were a number of lack of care issues that I saw in your exams. I'll mention a few. See the notes on the exam for more information.
• I also saw some significant problems with preconditions and postconditions, so we'll spend a few minutes going over those.
• Question four was one in which I was looking for creative and elegant solutions.

## History

Friday, 12 January 2001

• Created generic outline format for class.

Wednesday, 7 February 2001

• Filled in the details.

Back to Introduction to Files. On to Vectors.

Disclaimer: I usually create these pages on the fly. This means that they are rarely proofread and may contain bad grammar and incorrect details. It also means that I may update them regularly (see the history for more details). Feel free to contact me with any suggestions for changes.

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This page may be found at `http://www.cs.grinnell.edu/~rebelsky/Courses/CS151/2001S/outline.26.html`.