<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 
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><a href=“Supporting Students from Day One to Exam Day – AP Central | College Board”>Supporting Students from Day One to Exam Day – AP Central | College Board;
<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>