Scribe Post

Sorry guys my internet was down yesterday but even so, i sure wether or not there was a purpose in my scribe because all we did yesterday in the morning was work on a review, then Mr. Rekrut gave us the answer key in the afternoon period.
hm... Mr. Kuropatwa when you read this can you get back to me please!

BOB

Hey guys, goodluck on the unit test tomorrow, we can do it!!

For me specially, i cleared out most of my muddiest points tonight already. All in all, i think that this unit was piece-easy. It took some time for us to get some of the explanation, but in the end we seem to have gotten it through our heads. Study well guys, goodluck to us all!

BOB - Matrices

I don't think I had a hard time getting the hang of matrices. For once i feel like I understand what's going on in Math class, haha. Sometimes a question does look tricky, especially on the last worksheet we had to do, but when i looked at the answer sheet and saw that I got the same answer, I realized I was guessing it right. On the two questions that I got wrong, I quickly realized what I did wrong and fized my mistake. After that I double checked with some classmates and in the end we had the same answers. The only advice I have for the rest of you is make sure you read the question more than once, even if you think you know what it's asking. I made the mistake of assuming it was asking the obvious a few times already, and believe me, it makes you feel silly when you see you got it wrong.

BOB

Well the matrices unit was fairly easy except for the transition matrix part and some of the word problems. I know i'm not alone when I say that we had a little bit of difficulty with it. But overall, I was able to work with the other problems smoothly. That's it for now. Good luck on the test tommorow everyone !

BOB - Matrices

WELL, like everyone, matrices was a pretty easy unit for me. I was able to do everything except for the transition matrix. Only the big problem ones. Either than that, im able to do everything else. Hopefully the review will make the transition problems better. SOOOOO good luck on the test thursday. study study study! =)

BOB - MATRICES

Like most, I think the matrices unit it pretty easy it's just the word problems that I have a hard time doing.. but hopefully after the review we get tomorrow or the next day will help clear it all up. hm... so yeah that's it for now.

GOODLUCK EVERYONE!

BOB-Matries

The first unit Matries wasn't that bad. I found it to be easy most of the time, but when it came to the word problems that is where I had a hard time. Other than that it wasn't bad.
Till next time bye for now!

BOB - Matrices

To be frank, i found the matrices unit to be pretty easy, although you need to read the questions which are sometimes re-worded; for example the word problem some of us had trouble on during our matrices work-shop. All in all i found it pretty easy, just need to study. BTW the Godfather is on.

Today's Slides and Homework: February 15

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BOB...Matrices

When talking about matrices it is all pretty simple, until you get into the word problems. Since i missed both classes on monday, i don't really understand exactly what to do. From working on some in class and having other people sort of explain how they got answers I'm starting to pick up little things her and there. But it's not enough for me to be able to do questions on my own, i still don't have a good enough grasp on the whole concept of it all. I'm just hoping that over the next few classes before the test it can get explained a little bit more, and I will probably have to go in for some extra help. Other than the word problem matrices, it has actually been pretty good.

So This is my "BOB" and I am suppose to write problems I have in math. Matrices are pretty understandable and straight forward, and the only places that gives me trouble is the word problems. Sometimes I would have to solve the word problem before I can get into solving the matrix or matrices. So that would be the the spot that makes the tests troublesome for me, but I am sure that others have the same problem even if they are not this this class. That would be all, so far. Eat your vegetables.

Today's Slides and Homework: February 14

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BOB: MATRICES

I'm think i'm good with everything like the basic matrix and using the diagram to make the route matrix or vice versa but transition matrices give me a hard time. if we are given a problem to do i try and sometimes don't get it then when we have the workshop and we go over it i'm ok again until theres another question to do lol. it takes me a while to figure out the problem... maybe just a little more practice? yep..

BOB

Hello 8)
In this Matrices unit I would have to say that my personal "muddiest point" would be the word problems. Involving what we already know into realistic (sometimes) situations. Most of them are quite simple but there are some that are a bit tricky and confusing at the same time. But usually the tricky questions are the ones that just need to be read over more carefully so I can get it. But good thing we had that review practice at class yesterday, it really did help.
See you all later.

BOB

Since the matrices unit had started, i think that i had little problems like working too fast and then making little mistakes. Every time i tried to explain things in class on the board so everyone could understand a bit better i don't really think i did much help but i tried. I know i will get a good mark on the quiz tomorrow but i have to stay up and finish my homework so that i can be able to understand the transition matrices a bit better. Well that all i have to say now its back to the homework later. OH YEAH Don't forget that if you don't have a initial statement in the question, just make sure you read the questions you have to answer like in todays questions about the Oxford and Cambridge schools.

BOB

The matrices unit for me was pretty okay. The only thing I am having a problem with right now is the Transition Matrices. Other than that I think i'll do fine on the test, even though I used to suffer from blanking out on everything once the test is right in front of me. Haha. I hope that we'll get a chance to review on everything we've done on Matrices, so that I can be well prepared for the test on Thursday.

scribe

I’m not sure if this scribe will be much help but it’ll mostly be based on the question we had for homework last night that we also went over in class.

Enjoy =).

So the question that was given to us in class was:

The annual Oxford - Cambridge boat race, has been rowed regularly since 1839. Using data from 1839 up to 1982, there were 57 Oxford wins and 67 Cambridge wins. If the relationship between the results of a given year and the results of the previous year are considered, the following table can be constructed:

--This means that during the 57 games Oxford played, they won 35 times and lost 22 times.

Giving us: 35 + 22 = 57

--Also during the 67 games Cambridge played, they won 23 times and lost 44 times.

Giving us: 23 + 44 = 67

Then part A of the question asked us to “convert the ‘number of wins’ to percentages."

To calculate the number of wins, you divide:

Once you calculated the wins, you also have to convert the number of loses to percentages and to get that, you divide:

After all the calculations are done, we place the numbers back into the matrix and we end up with a transition matrix that looks like this:

Now moving onto part B of the question, which is asking us to find the probability that oxford will win a game this year and the second and third year.

In order to find the probability that Oxford will win this year and the following years, we must construct a state matrix that looks like this:

--The “1” in this state matrix represents the probability that oxford will win.
--The “0” represents the probability Cambridge won't win.

Now that we have both the state matrix and the transition matrix, we can use multiplication to solve part B of the question.


Before I go onto part C, I’ll do part D of the question first because it’s exactly the same as part B. The only difference is that state matrix because now, it looks like this:--This state matrix is different from the previous one we had earlier because now we’re trying to look for the probability Cambridge will win instead of Oxford. Which is why the zero and the one have switched sides.

Now that we have all the information we need, repeat exactly what we did in Part B to part D. Giving us:

Now going back to part C, the question is asking us “over many years, what percentage of games will Oxford win and Cambridge?”

Since the question isn’t asking for when it stabilizes, I just picked a random number like 50, and multiplied it, like so:
And since the question isn’t asking to prove if these are stabilized, I didn’t multiply again by 51 and just left it as is.

Anyways I guess this is the end of my scribe and hopefully it might be some help to some of you. And for tomorrow's scribe, it’ll be ickie

Today's Slides and Homework: February 12

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BOB

I found that the matrices unit was pretty easy. However the problems that I had in this unit was how to solve probability problems with matrices, like the homework we got last night. Also the things that aren't so clear to me and I need a little more explanation, is how to find the intermediates in matrices. Other than that, I think I'll be ready for the test.

February 11,2007 - Transition Matrices

What is Transition Matrices?
- A transition matrix is a square matrix describing the probabilities of moving from one state to another in a dynamic system.
For more info, check out:
http://economics.about.com/library/glossary/bldef-markov-transition-matrix.htm

Example:
In Winnipeg, there is a workforce of 2800 people, with 2500 employed and 800 unemployed. During the course of one year, 20% of the employed workers will lose their jobs and 50% of the unemployed will find jobs.

CLICK THE IMAGE BELOW:

Quotes:

“It isn't that they can't see the
solution.It is that they can't
see the problem.”
-- G. K. Chesterton

Forecast for February 12, 2008(Tuesday)
-11`C with a light snow and a wind of
20km/h.

BTW: Next scribe is YELLOW