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Feb. 21, 2018

review on 2/21

from:Bowen, Paul

to:Statistics

The main part of the class will continue reviewing on 1/21.

The others should continue at their own speed.

Feb. 10, 2018

Poisson Monday

from:Bowen, Paul

to:Statistics

For Monday, 2/12, read the chapter about the Poisson distribution!

 

Feb. 07, 2018

Extension due to AMC

from:Bowen, Paul

to:Statistics

OK, Due to the AMC exam, the assignment us extended until 2/9.

Feb. 05, 2018

School cancelled, assignment extended.

from:Bowen, Paul

to:Statistics

School is cancelled today, so the assignment originally for today is not due until Wednesday.

Feb. 03, 2018

error in replacement exercises

from:Bowen, Paul

to:Statistics

Aaaaaaaargh! There's an error in the first replacement exercise!

It shows the joint distribution of X and Y as

1/6  1/6

2/3   2/3

. This is of course impossible. Please change it to

1/6  1/6

2/6   2/6

. Thanks!

Feb. 01, 2018

clarification of previous comment

from:Bowen, Paul

to:Statistics

When you arrive at something by arithmetic, algebra, trigonometry, or calculus, you don't have to specify the reasons. But when you arrive at something on the basis of some Statistical principle, you should name that principle; or, on homework, you may say, "By the equation on page xxx".

Feb. 01, 2018

Giving reasons

from:Bowen, Paul

to:Statistics

In Math we don't just say things dogmatically, we give reasons. I'm going to say this again: if you give the right answer, without explaining *why* it is the right answer, you will receive NO CREDIT!

Jan. 31, 2018

Cancellation of assignment

from:Bowen, Paul

to:Statistics

Oops! I forgot that Wednesday 1/31 is AMC conference day! Also, I think that exercises 11.1 -- 5 (due that day) are too difficult. I am therefore cancelling that assignment. If you have done some of it, give what you have to me (or put it in my box, or send it to physis_asparagus@yahoo.com), and I will count it toward extra credit. I will create and distribute a substitute set of exercises.

We may be working on prep for AMC for awhile, so the substitute exercises will probably be due the first class after the AMC.

Jan. 31, 2018

PS to previous post

from:Bowen, Paul

to:Statistics

Also: I didn't have time, on Monday, to finish my lecture on Chapter 11. In my haste to get on with Chapter 11, I left it to you to read the rest. It occurs to me that this may have been unwise, and that after the AMC, I should continue my lectures on Chapter 11. What do you think?

Jan. 30, 2018

for Wednesday, 1/31

from:Bowen, Paul

to:Statistics

For wednesday, 1/31, hand in exercises 11.1 - 11.5.

Jan. 30, 2018

Unscheduled vacations

from:Bowen, Paul

to:Statistics

The Schilling School has scheduled vacations. If a student's family wants to declare a vacation of their own, that is their privilege, but it does not absolve the student of homework or other responsibilities. Work should be sent to me at

physis_asparagus@yahoo.com

at or before the time due (class time on a date announced here). Note that it is is "physis", not "physics".

I don't penalize for absence, but I will penalize for failure to turn in work.

Jan. 29, 2018

Always give reasons

from:Bowen, Paul

to:Statistics

On tests, assignments, and the like, always give reasons for your answers!

Even if it is a yes-or-no question, don't just write one word. Show me that you know *why* the anwer is what it is!

In the future I will take off a point for answers without justifications.

Jan. 21, 2018

extension from 1/22 to 1/24

from:Bowen, Paul

to:Statistics

I have decided to give an extension on the assignment due Monday, 1/22. You now have until Wednesday, 1/24.

If you wish to hand anything in on 1/22, you may.

Jan. 19, 2018

Assignment for 1/22/18

from:Bowen, Paul

to:Statistics

For Monday, 1/22, hand in the first five exercises to Chapter 10 at the beginning of class. Due to my new policy, late papers will receive a 0 and cannot be made up with extra credit, and no curving will be done this quarter.

Jan. 17, 2018

Read Chapter 10 for 1/19

from:Bowen, Paul

to:Statistics

For 1/19, read Chapter 10 and be prepared to discuss it.

Jan. 16, 2018

For Wednesday, 1/17/18

from:Bowen, Paul

to:Statistics

On Wednesday, 1/17/18, we will discuss the exam.

No need to have read Chapter 10 until Friday, 1/19/18.

Jan. 10, 2018

Assignment for Friday, 1/12

from:Bowen, Paul

to:Statistics

For Friday, 1/12, read Chapter 10!

(Added later: no need to have read chapter 10 until Friday, 1/19.) 

Jan. 09, 2018

Delicious exam!

from:Bowen, Paul

to:Statistics

On Wednesday, 1/10/18, we will have a delicious exam, covering chapters 5-9! 

Dec. 11, 2017

For wednesday, 12/13

from:Bowen, Paul

to:Statistics

For Wednesday, 12/13, read chapter 9!

Dec. 05, 2017

Change in this week's assignments

from:Bowen, Paul

to:Statistics

Because of the play, and because I didn't finish lecturing on Chapter 8, we will proceed as follows:

On Wednesday, 12/5, I will continue lecturing on Chapter 8.
On Friday, 12/7, exercises 8.1-8.5 will be due at the beginning of class, and I will discuss them.
On Monday, 12/10, exercises 8.6-8.10 will be due at the beginning of class, and I will discuss them.

To those in the play, break a leg!

Dec. 02, 2017

More about extra credit

from:Bowen, Paul

to:Statistics

If you do extra credit to make up for a bad grade, your resulting grade is determined as follows: Your grade on the make-up, expressed as a percentage, adds that percentage of the difference of your original grade and one hundred to your original grade. In other words, if your original grade is O, your grade on the extra credit is E, and your resulting grade is R, then R = O + (E/100)(100-O). For example, if you got a 40 on your first try, and then got a 50 on the extra credit, your resulting grade would be 40 +(50/100)(100-40) = 40 + 30 = 70.

This means that you have nothing to lose by doing the extra credit.

Dec. 01, 2017

Assignment for 12/4/17 and the next two classes

from:Bowen, Paul

to:Statistics

I would like to spend only three class days on chapter 8; so read the chapter by 1/4, do the first five exercises by 1/6, and do the next five exercises by 1/8. 
Exercises must be handed in at the beginning of class (or immediately upon arrival of a late student) in order to be acceptable (see previous post for more details). I am willing to give extensions if there is a plausible excuse. 

Dec. 01, 2017

New rules

from:Bowen, Paul

to:Statistics

OK, it makes no sense for students to hand in an assignment on the same day that the assignment is discussed in class (unless it is handed in at the beginning of class). Likewise it makes no sense for an assignment to be handed in *after* it has been discussed in class. From now on. late work (as defined above) will receive a zero, and incomplete work will receive a grade based on the amount done correctly. To redress a grade for extra credit, you must get a special extra credit assignment from me. In general, such an extra credit assignment will be more difficult than the assignment it replaces, so rational students will submit their work on time. I remark that when you get to college, you will receive zeros for late work and will have no way to make up for those zeros.

 

Nov. 24, 2017

Assignment for 11/27

from:Bowen, Paul

to:Statistics

OK, I made a mistake in my previous message (now deleted).  What we will do is:


On Monday 11/27, students should hand in the first five exercises at the end of chapter 7; then we will discuss them in class.

Nov. 24, 2017

Ignore all messages from 11/24 except this one!

from:Bowen, Paul

to:Statistics

The following supercedes any other concerning 11/27.

On Monday, 11/27, I will finish lecturing on chapter 7.
 

Nov. 24, 2017

Ignore previous message

from:Bowen, Paul

to:Statistics

Ignore previous message.

Nov. 15, 2017

Addendum to previous message

from:Bowen, Paul

to:Statistics

On Friday I will also discuss, briefly:

 

1. Refresher on integration by parts, and

2. For random variable X, what does X^2 mean, and in general, what does g(X) mean, where g is a real function?



 

Nov. 15, 2017

For Friday, 11/17

from:Bowen, Paul

to:Statistics

We didn't cover chapter 7 completely (not even close), so no exercises are due on Friday, 11/17. Instead, students should review chapter 7.

I aplogize for leaving my book and lecture notes at home.

Nov. 13, 2017

Chapter 7

from:Bowen, Paul

to:Statistics

OK, chapter 7, here we come! For Wednesday, 11/15, read Chapter 7 and take a look at the first few exercises. Then on Friday, 11/17, prepare the first five exercises, and for Monday,11/20, the next 5. On Monday we will decide whether we need another day.

Nov. 03, 2017

Next week chapter 6!

from:Bowen, Paul

to:Statistics

Yes! Next week we will do chapter 6!

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