<p>1) how many different types of confident intervals are there and how do u know which one to use? T* , Z*, ??</p>
<p>2) when do u divide invnorm by 2? like invnorm (.95/2).. when do u do this?
im so lost with invnorm, can someoen post everything they know about this function, id really appreciate it</p>
<p>3) also can someone post formulas that arent on the AP exam sheet. Thanks!</p>
<p>for using inversnorm, you divide by two if it's a two tailed problem, simply put that means if it's 5 < x < 2 as oppsed to x < 2 which is referred to as one tailed.</p>
<p>well it depends on what kind of problem you are dealing with...for 1).</p>
<p>if you get proportions you do it with z*
if you know sigma --> z*
if you don't know sigma -->t*</p>
<p>Does anyone know the raw score/% needed for a 5? I'm guessing its something around 2/3 but I was just wondering if anyone knew for sure.</p>
<p>I'm trying to find out the same thing too. I looked for the previous years' score ranges and found nothing.</p>
<p>I got 31.25 points on the a practice multiple choice, assuming I earn 20 points on the free response, where would my composite raw score, (of 50.25) place me?</p>
<p>in order from greatest to smallest</p>
<p>is skewed left: median, mean, mode ?
is skewed right: mean, median, mode?</p>
<p>I think skewed left is mode, median, mean. I think mode is the most resistant.</p>
<p>id agree with ^, and 50.25 is around a 4. My teacher told me 50-70 is 4 70+ is 5</p>
<p>Idk half the stuff, I jus put whatever fits into the calculator. You guys have Stats list editor for the 89?</p>
<p>68+ is a 5</p>
<p>In general, it seems as though ppl on this board view the stat test as a "joke". Is this true? Is it really that easy?</p>
<p>is skewed left: median, mean, mode ?
is skewed right: mean, median, mode?</p>
<p>I'm not sure you would encounter too many questions regarding mode and skewedness. It would be more likely that a skewed left distribution would have mode as the greatest while a skewed right distribution would have mode as the smallest, but its not a sure thing there. The other two look like they are in the right order though</p>
<p>I'm going to fail this test.</p>
<p>Yeah, so I'm placing bets on the last "new" unit being on free response. I have no clue how to do that.</p>
<p>And the logging thing...no clue.</p>
<p>u mean ANOVA? it sounds sooo misleading :D maybe its because our teachers been creating ridiculous tests on supposedly easy concepts, but im guessing ANOVA to be one of the hardest subjects yet.</p>
<p>btw, its not in the barrons book (newest ed) so i guarantee there wont be that on there</p>
<p>as for logging, just check the residual plot. if theres a curve, just log the y value and it should come out straight =)</p>
<p>lol uc doesn't even cout stats well at least not berk, so watever</p>
<p>I found the content specific tips to be good. scroll down for a lil and you'll see em</p>
<p>I don't really know. The last subject of Barron's with computer displays. My teacher went over it in one period, and I wasn't there. </p>
<p>How do you graph a residual? I totally forget...wow, this isn't good.</p>
<p>i have one day to learn the material and take the tests. I have a Kaplan book and a Princeton Review book. Which book is better for:</p>
<p>a) the study guide review part
b) the practice tests</p>
<p>I've just sort of cruised along this year in stats without absorbing much of anything, doing just enough to get a B or a C. It's really an amazing yet all-too-useless trait. So I'm anticipating my score to fall in the 1-2 range, more or less.</p>
<p>I don't suppose there's anywhere online I can learn statistics in 15 minutes or less?</p>
<p>to graph a residual there's the residual list under 2nd list on the 83 and don't u just put that as ur L2 on statplot? oosh, i'm not sure.<br>
don't forget that residual is y - y hat! i always forget that one...</p>