- 10 to 14: 8
- 15 to 19: 23
- 20 to 24: 53
- 25 to 29: 64
- 30 to 34: 30
- 35 to 38: 3

If you would like to see the test in .pdf format, with answers, including my answers for the short answer questions, you can. There were two versions of the test, which differed only in the order of the multiple choice answers. You can look at the one that you took: Version A: answer 1 = "e" and Version B: answer 1 = "a".

- 10 to 19: 1
- 20 to 29: 26
- 20 to 39: 54
- 40 to 49: 65
- 50 to 59: 27
- 60 to 70: 6

*Missed Quizzes*. Because of the automatic nature of the system, it will not be allowed to have make up quizzes if you miss one. However, there is ample time to take each quiz, and you can do it from anywhere in the world with an internet connection, so there should not be any missed quizzes. Furthermore, I will drop your lowest two quiz scores, so if you should miss a quiz but do well on the other quizzes, it will not affect your grade.

*Help from friends on quizzes*. On in-class exams, your work must absolutely be entirely your own. However, I treat the quizzes differently. They are designed to help you learn rather than to test how much you have learned. I believe that you can learn best by discussing the course content with friends in the class, as well as seeking help from me or our graduate student teaching assistants. For that reason, I give permission to work with a friend on a quiz. I strongly discourage just asking a friend for the answers. If you do that, you won't learn. Your performance on the tests will suffer as a consequence.

The "Display Quiz" button allows you to look at the quiz. The "Take Quiz" button allows you to take the quiz. If you want, the system will email your quiz answers. Once the closing date is past, you can look at your score, your answer, and the correct answers using the "Exam and Quiz Scores" button at the bottom.

Note that I use "/" to indicate division. Thus 3/4 means 3 divided by 4. It is nicer to write 3 with a line under it and the 4 under that, but it is pretty hard to do that in HTML, the language of web pages. Also, parentheses indicate the order of arithmetic operations. Thus (1 + 2)×7 means to add 1 and 2, then multiply the result by 7. That's different from 1 + (2×7), which means to multiply 2 by 7, then add 1 to the result. If there are no parentheses, the convention is that multiplications and divisions are performed first. Thus 1 + 2×7 = 1 + (2×7).

You do not need a calculator for the quizzes. For an occasional question a calculator might save a little time, but I think that you will learn more if you work with paper and pencil. We will not use calculators for exams.

- Quiz 1: Practice Quiz. Due just after 02:00 am, 01 Oct 2007 (i.e. Sunday night, 30 September).
- Quiz 2: Due just after 02:00 am, 08 Oct 2007 (i.e. Sunday night, 7 October).
- Quiz 3: Due just after 02:00 am, 08 Oct 2007 (i.e. Sunday night, 7 October).
- Quiz 4: Due just after 02:00 am, 15 Oct 2007 (i.e. Sunday night, 14 October).
- Quiz 5: Due just after 02:00 am, 15 Oct 2007 (i.e. Sunday night, 14 October).
- Quiz 6: Due just after 02:00 am, 29 Oct 2007 (i.e. Sunday night, 28 October).
- Quiz 7: Due just after 02:00 am, 29 Oct 2007 (i.e. Sunday night, 28 October).
- Quiz 8: Due just after 02:00 am, 5 Nov 2007 (i.e. Sunday night, 4 November).
- Quiz 9: Due just after 02:00 am, 5 Nov 2007 (i.e. Sunday night, 4 November).
- Quiz 10: Due just after 02:00 am, 12 Nov 2007 (i.e. Sunday night, 11 November).
- Quiz 11: Due just after 02:00 am, 12 Nov 2007 (i.e. Sunday night, 11 November).
- Quiz 12: Due just after 02:00 am, 27 Nov 2007 (i.e. Monday night, 12 November; it is Monday night instead of Sunday night in case you were away for Thanksgiving).
- Quiz 13, the last quiz for the course: Due just after 02:00 am, 3 Dec 2007 (i.e. Sunday night, 2 December).