AP stats discussion

Test Preparation AP Test Preparation
1

<p>Do we have to know how to find the probability of Type 1 and 2 errors?</p>

<p>some of barrons problems require us to do it..</p>

<p>it says..</p>

<p>"whats the probability of rejecting the null hypothesis when its true?"</p>

<p>and I don't really understand the explanation for such problems.</p>

<p>there are like 3 problems related to type 1 and 2 errors.</p>

<p>could anybody answer me?</p>

<p>Also, is there anyone out there who can explain the various transformations of linear regressions (bivariate) for me?</p>

2

<p>barrons is harder than the actual thing…but i think you should still know how to do type 1/2, or at least identify them…</p>

3

<p>in barrons, there are a lot of problems regarding…</p>

<p>1 and 2 are true, only 1 is true, or there is no matching answer set.
and I find them the hardest of all compared to the ones that I just have to calculate.
Are there really that lot of questions with roman numerals 1,2, and 3?</p>

4

<p>oh i know!!!
i hope not…cuz I HATE those!!!..i did pretty well on barron’s free response…but not mc…
i thought barrons was the best book for it.but i don’t know anymore…</p>

5

<p>Okay,
Type I error: Probability of rejecting the null hypothesis when it is true.
Type II error: Probability of failing to reject the null hypothesis when it is false.
Power = 1 - P(Type II error)</p>

<p>Basically, the greater the power, the stronger the test is. Yes, you need to know this stuff. It’ll definitely show up somewhere in the multiple choice or as one part of a free-response.
And yes, there are tons of those annoying I/II/III questions. Its so easy to mess up on those, just take your time and work through them. If you can’t eliminate two answer choices, skip it.</p>

6

<p>My teacher told me that we’d never have to do complicated power calculations entirely on our own.
They’d either guide us step by step or there would be multiple choice questions about it.</p>

7

<p>can anyone explain the transformations of bivariate regressions??</p>

8

<p>About Type I, it’s always equal to alpha.</p>

9

<p>RouTiNe for FuN</p>

<p>Type 1: Reject the True Null
Type 2: Fail to reject the Null</p>

<p>something my teacher told us</p>

10

<p>No calculations, only concepts</p>

11

<p>[AP</a> Central - AP FAQs](<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>

<p>Yep, confirmed.</p>

12

<p>thx. and can anyone who’s familiar with transformations teach me?</p>

13

<p>We need to know transformations for the AP test? i haven’t really seen this on a MC before.</p>

14

<p>how’s everyone studying for this tonight!?</p>

15

<p>one practice test out of barrons, looking over the assumptions, and a good nights sleep</p>

16

<p>rereading my 1000 page textbook (seriously)</p>

17

<p>Grabbing a latte from Starbucks, and running through my review book/notes. It’s gonna be a long night. . .</p>

18

<p>are you guys self-studying?
or did you take a class?</p>

19

<p>i took a class…</p>

20

<p>how long have you been reviewing in class?</p>