Got a teacher who cant speak english very well, and also is very quiet in a room of 50 students so I dont really understand what the hell she is saying, and the book we are using is confusing as hell (she even said this isnt a good book but im required to teach out of it). So are there any good books that i can self teach myself from? Im thinking about picking up statistics for dummies... there isnt tutoring available for this class either.
we are using Probability Concepts in Engineering by Alfredo H-S. Ang and Wilson H. Tang.
Mmmm.. I don't remember what my statics book was but it was decent. It's at my parent's place so I'll call them and ask them what it was tomorrow morning.
In the mean time, if you need any help w/ statics homework, scan it and post up. I was a tutor and it's still relatively fresh in my head. ;D Everything except stupid things like centroid by integration. That stuff is annoying as hell and I don't remember how to do it well because I didn't need it again until master's classes. But if you do end up needing help w/ it I might be able to dig around for some stuff on it. I kinda remember it...
QuoteMmmm.. I don't remember what my statics book was but it was decent.
Aaaaaaaaargh. The question is about stat
istics, not statics. Kind of like the difference between break and brake that enjunears also don't seem to be able to grasp or spell. ;D
Just kidding and I can't read or spell eather.
Spelling shmelling. ;D
yea, i ment statIStics not statics, im down with statics, in fact we are in the middle of CoG and Centroids. :P
Woops. Obviously my years of schooling aren't worth much since i can't even read. I bet I still have a 4th grade reading level. [roll]
In college I had a statics teacher that was originally from Poland, and had a very thick accent and relatively poor english skills. One day during lecture he was rambling on and mentioned something about 'animal paint'. A few of us began wondering amongst ourselves just what the hell he has talking about. Then after about five minutes, it dawned on someone and they said, audibly, "Ohhhh, ENAMEL paint!"
The teacher turned around and nodded, "Animal paint, yes?"
Sorry, no help on the statistics. :)
For statistics, the web is probably just as good a place as any. Also, excel has a pretty decent tool set with OK Help. Or minitab.
If you are really lost though, I would recommend sitting down one on one with the prof and getting help outside class. The longer you wait, the worse it will get - statistics builds on itself.
If you have any specific questions, post them up, I am sure someone on here can answer it [thumbsup]
mitt
Quote from: mitt on March 10, 2009, 06:13:33 AM
If you have any specific questions, post them up, I am sure someone on here can answer it [thumbsup]
where to begin.... i will try to find some good online resources to read up on it then post questions as I go along. :) ;D
now i have to go do the reading.
Whay are you taking statistics as an engineer? Is it required, or are you just a masochist?
Im not an engineer. Im a math major. you must of read it wrong. [roll]
;D
its required. one of the many BS classes i need to take. (including microbiology and circuits)
Quote from: Triple J on March 10, 2009, 09:09:34 AM
Whay are you taking statistics as an engineer? Is it required, or are you just a masochist?
Stat was required for all engineers at my school. It is fundamental in building test plans, testing, interpreting results, setting tolerances on prints, measurement methods, and approving new parts, among other things. It is also valuable if you deal with a manufacturing environment with Statistical Process Controls, and you need to trouble shoot problems based on logged historical data.
mitt
Quote from: mitt on March 10, 2009, 09:30:47 AM
Stat was required for all engineers at my school. It is fundamental in building test plans, testing, interpreting results, setting tolerances on prints, measurement methods, and approving new parts, among other things. It is also valuable if you deal with a manufacturing environment with Statistical Process Controls, and you need to trouble shoot problems based on logged historical data.
mitt
Must depend on the type of engineer. You're an ME right? If I'd have made it past Numerical Methods (at the time basically advanced Fortran) I might have had to take it for ME. [laugh] CE didn't require it...thankfully. ;D ...and i can't think of a time I would have used it in the last 13 years. Well, at least not anything so complicated I needed a whole sememster of it.
Quote from: Triple J on March 10, 2009, 09:37:13 AM
Must depend on the type of engineer. You're an ME right? If I'd have made it past Numerical Methods (at the time basically advanced Fortran) I might have had to take it for ME. [laugh] CE didn't require it...thankfully. ;D ...and i can't think of a time I would have used it in the last 13 years. Well, at least not anything so complicated I needed a whole sememster of it.
I had to take it. Never used it. CE also.
Quote from: B.Rock on March 10, 2009, 10:00:21 AM
I had to take it. Never used it. CE also.
In my infant knowledge, i think its because they hire a statistician to do it the real grunt work of calculating the stuff. You just have to understand it.
Quote from: He Man on March 10, 2009, 10:08:23 AM
In my infant knowledge, i think its because they hire a statistician to do it the real grunt work of calculating the stuff. You just have to understand it.
That's not my experience...we just don't use involved statistics. We all do our share of calculations, particularly at the staff and senior staff levels.
Quote from: mitt on March 10, 2009, 06:13:33 AM
If you have any specific questions, post them up, I am sure someone on here can answer it [thumbsup]
That right there is frightening.
;D
Quote from: Triple J on March 10, 2009, 10:16:35 AM
That's not my experience...we just don't use involved statistics. We all do our share of calculations, particularly at the staff and senior staff levels.
That sounds nice. cause i dont like statistics.
Quote from: B.Rock on March 10, 2009, 10:00:21 AM
I had to take it. Never used it. CE also.
As an EE I have used statistics a bunch.... Design of experiments and all. Glad to see others have manage to live their lives without this discipline. Everything you ever need to know is in the Radio Engineer's Handbook. Its a real page turner.
"teach myself the class". Good thing tuition is cheap- otherwise you might be pissed that you weren't being provided a proper learning environment. (been there [roll])
Quote from: MrIncredible on March 10, 2009, 11:52:48 AM
That right there is frightening.
Yeah, he didn't say "correctly"
Quote from: mitt on March 10, 2009, 06:13:33 AM
If you have any specific questions, post them up, I am sure someone on here can answer it [thumbsup]
mitt
And what is the probability of that?
Sorry, I couldn't resist :P
Quote from: howie on March 10, 2009, 04:03:08 PM
And what is the probability of that?
Sorry, I couldn't resist :P
Well, while someone was typing any answer, the DMF could crash, and die, therefore someone not answering. The odds of that are about 1 in 12 ;D
mitt
Probably the difference between ME's and CE's - ME's mass produce a lot of little things with low margins for working, so we need to test and improve until it just works most of the time (classic stat problem, what is your failure rate, or time to failure). CE's need to design one big thing, and it has to work the first time, for a long time, thus a lot of over design is built in, no statistics required.
mitt
Quote from: mitt on March 10, 2009, 04:12:33 PM
CE's need to design one big thing, and it has to work the first time, for a long time, thus a lot of over design is built in, no statistics required
mitt
tell that to the MTA that coudlnt figure out that the new station they built was too wide for a train to the enter and rectifyed it so a train couldnt enter at all, then finally fixed it but realize that the sea wall is leaking. :-\ thats why the metrocard fare is set to increase from $83 monthly to $103 monthly.
OKAY first question for Statistics...there is an equation in bionmial probablity... say for a question where you have N(75,15) cov of 20%, what is the probability that the interval betwen 2 server earthquakes will be less than 65 years?
the answer is phi(65-75/15), what the hell is phi? you end up geting phi(-0.6777)=.254. My teacher writes "phi" as a 3 or a script z. And im not sure if she means phi, or psi. she doesnt ever go into the complex examples in the book. All her examples are basic to the point of traffic lights, balls in a box, and roads that close. >:(
nevermind to the above. When she said psi, phi, or zi, or wahtever she ment, she was saying Z. and that number is suppose to match up with the Z-score chart we got. son of a gun!
never mind it was Xi. the Z was actually a helical thingy
(http://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Xi_uc_lc.svg/160px-Xi_uc_lc.svg.png)