<p>I find it that his lectures can be pretty confusing sometimes. I try to read and understand the book, but it doesn't go into very much detail either about how he goes about the problems. I heard that his actual exams aren't as bad as the homework though. I'm just wondering what the best way to study for the midterm is. The midterm is 30% of our grade, and the final is 60%.</p>
<p>im right there with ya! im going through and just reading all of my notes and then the enrichment problems they posted.</p>
<p>he goes pretty fast in lecture, and even though ive taken several stats classes and done well, i get lost sometimes. plus, i dont actually even go to lecture anymore, lol.</p>
<p>do you know the midterm format?</p>
<p>soooo…the stuff about types of eror and hypothesis testing that he covered last friday arent going to be on the midterm right? its just going to be everything up to Ch. 4 and the sections on central limit theorem and probability and normal distributions, right?</p>
<p>i couldnt go to the review lecture today 
i had a midterm right after in dwinelle at 9 am and didnt think i’d make it from lewis in time…</p>
<p>anyone know the format, btw?</p>
<p>corpus…christi…
big…mac…</p>
<p>ahem. ignore those first words.</p>
<p>lol…its too early for me to comprehend, crow…what?</p>
<p>haha</p>
<p>Correct, the midterm will just cover up to Ch. 4 (Ch. 5 will not be on the midterm).</p>
<p>I think that the format will be similar to the enrichment workshop problems. Just an assumption though.</p>
<p>What’d you guys put for the extra credit questions?</p>
<p>i said false for the france mean leg question…it took me a minute and i had to ask the gsi if the question assumed the population of france and usa were equal and he said it was unimportant…it took me only a few secs after to realize after</p>
<p>for the first page, P(Obama) and P(women) were independent, right?</p>
<p>and on the second page, for how are X & Y related (the binary genetic probability Q’s), they are mutually exlusive, right???</p>
<p>and on the distribution question, the SD of the sampling distribution, was it 0.16???</p>
<p>for the france question i put not enough info cause i thought he was trying to trick us or something lol</p>
<p>yup independent</p>
<p>for the relationship, i just said the numbers were the same because E(S) and n=4 were equivalent. 4 matings = 4 kids. kinda confused about what he was looking for</p>
<p>uhh he asked us for the SD? which page was that on?</p>
<p>I put “you can’t tell” cus I also thought he was tricking us. But I think overall, there is no actual data of the population that shows the number of legs each person has, so you can’t make assumptions.</p>
<p>Yes, A and B are independent.</p>
<p>I just put that the E(X) and Var(X) are the same. Not sure what he was looking for either.</p>
<p>I think the SD was 2? Since the Var(X) was 4, so the SD is the square root of that?</p>
<p>OH the SD on the last page? Var(X) for the population sampled was 4 so Var(X) = 4/n = 4/100 = 1/25. SD is square root of that which is 1/5 right?</p>
<p>He didn’t ask us for the SD explicitly right? We only needed that to compute the probabilities at the bottom of the page?</p>
<p>lol…oops…sorry no…he didnt ask for SD i meant variance of the sampling distribution…wasnt it just (4^2)/100=0.16??? the pop var was 4^2 and i didnt know how else you could derive a sample variance without actual data points…</p>
<p>did i get that wrong??? if i had balls, id kick/punch myself in them if i really got that wrong… :(</p>
<p>and coron, E(x) and Var(X) def were not the same…thats impossible…</p>
<p>he was asking for the relationship between E(x) and E(Y) (which incidentally added to 1 along with the variances…thats why i said X and Y were mutually exclusive and exhaustive)</p>
<p>SD of sample = [SD of population]/[sqrt(n)] = 2/sqrt(100) = 2/10 = 1/5</p>
<p>Sorry, I meant the same as whodis about the equivalence.</p>
<p>Whoa why did you do 4^2? Wasn’t the variance of the population sampled just 4?</p>
<p>coron: yeah…but im almost positive that q asked for sample variance (not SD) thats why i did (4^2)/100…</p>
<p>[var (sample)]^2=[(var (pop))^2]/n</p>
<p>oh shiet…i think it was just 4/100 lol…i squared the pop variance like an idiot…haha oh well…maybe theyll feel sorry and give me some points</p>
<p>@Waiting4College
Are u in Public Health major?
How many transfer students are in this major?</p>
<p>^^ yessir.</p>
<p>its getting harder and harder to declare PH with each year it seems. and its not easy for transfers by any means (~ 10 seats or something ridiculously low per year)</p>
<p>From the sph website:</p>
<p>Declaring the Major</p>
<p>Students should apply to declare a major in Public Health after completion of lower division requirements, generally at the end of the sophomore year. Applications to declare the major are due at the end of every semester; for 2011, these deadlines are June 1 (spring), August 22 (summer), and December 15 (fall). Transfer students should apply at the summer or fall semesters, whenever they have completed the prerequisites.
Generally, third-year transfer students have completed their prerequisite coursework at community college and are ready to declare the major at the beginning of their first semester at UC Berkeley. The major is open to 10 third-year transfer students per year.</p>
<p>To declare a major in Public Health you must first complete all of the lower division prerequisites (mathematics, biology, and social sciences) and obtain a grade of at least a B- in Bio 1B. Once these requirements are fulfilled you should submit an application and application essay, carefully following the instructions.</p>
<p>I am planning to take 142 in the fall. Do you guys think taking stats 2 will be good preparation for 142? If taking stats 2 will help me in 142 then I will enroll in it for spring. I thought 142 is supposed to be easy. Why are you guys stressing over it?</p>
<p>it is VERY easy…i am not stressed…just ****ed at myself for making the stupidest errors humanly possible</p>
<p>dont even bother with stats 2. you just dont need it…are you intended PH though steven?</p>
<p>Yup! Planning to apply end of spring, lol</p>