<p>luckily I remembered the assumptions. haha.</p>
<p>Boo for college board for having TWO mistakes on their test!</p>
<p>And boo for having to take 2 AP exams in one day. I couldn’t even eat anything : (</p>
<p>BUT, I’m a man, I never show pain. : |</p>
<p>are we referring to 9, 34? were they really mistakes?</p>
<p>Yeah, none of the answer choices were valid</p>
<p>mind sending me a PM about which ones they were?</p>
<p>I’m pretty sure #34 had a valid choice</p>
<p>Could someone please remind me via PM the premise of questions 9 and 34?</p>
<p>Why do we use n-1 instead of n in standard deviation?</p>
<p>^agreed with thiscouldbeheavn</p>
<p>Yeah, those ones I’m pretty sure did NOT have mistakes…</p>
<p>anyone wanna PM me and remind me what they were about</p>
<p>
</p>
<p>Since samples are smaller than the normal population, there is inherently less variation. Using n-1 in the denominator makes the calculated statistic larger and thus a better estimate.</p>
<p>PM me too about 34…i dont remember which one it is.</p>
<p>Erg. FR was way better than I thought. I’m just worried I didn’t do the phrasing the way they wanted. I ALWAYS miss points that way. #2 b was weird. I figured out how to do it right when the proctor called time (she didn’t give us a 5 min. warning!) #6 was better than I thought.</p>
<p>MC was freaking hard. I answered all of them though >.< But didn’t have time to check even HALF of the ones I wanted to. GAH!</p>
<p>Guess we’ll just have to wait till July to get our scores. I hope the curve is easy this year.</p>
<p>did we have to use n-1 thing in the MC? i don’t recall…</p>
<p>never mind, i figured it out ha</p>
<p>…a chart that appeared to be 4x5 but was really 1x10…</p>
<p>could someone PM me about 9 and 34 as well?</p>
<p>mmm, i had like 15 minutes left after mc, and 20 minutes left after frq, checked everything. mc was perhaps slightly harder, frq was pretty trivial.</p>
<p>hopefully, i’m not horribly off in judging myself.</p>
<p>I think the chart was 2x10, actually…</p>