AP Statistics Post-Exam

<p>Yeah number 5. I think I pulled out the right numbers. I don’t know. I haven’t done stats for the last two weeks because of APs and my teacher being out and I didn’t study (since I don’t get credit for this I focused on others) so some of the FrQ was tricky. I don’t remember a chi squared anywhere on the FRQ. I may just have used a different test (pretty sure it wasn’t a chi squared problem)</p>

<p>I actually thought part a of 1 was kinda tricky …</p>

<p>chi–squared??? yeah that’s the part my teacher DIDNT get to in class…</p>

<p>was that the one with the two athletes? and it asked you to pick one?</p>

<p>From what I recall, a lot of the test focused on probability and confidence intervals. There wasn’t much at all (if anything) on Chi-Square tests.</p>

<p>Yeah, there was one MC with chi-square tests I believe but nothing on the free response.</p>

<p>^^^Wait, that was chi2? I thought that was another straigtforward technique (which I won’t reveal) because there weren’t any expected vs. observed calculations </p>

<p>and number 4 was the one I thought would not be chi2 - we did a bajillion of these and it was one of the bajillion we did (once again I’m not saying) not the chi2</p>

<p>^what you said</p>

<p>i used a chi squared test for the question about the association between men and political party x, was I the only one that recognized that or did i do something wrong?</p>

<p>I self studied poorly and found some of the fRQ east and some of it hard, as in i had no clue what to do such as the last FRQ. The MC wasn’t bad. I was aiming for a 3 so i will get the AP Scholar with Distinction.</p>

<p>Much easier than I expected</p>

<p>Was expecting this tests FRQ to be a killer since that has been the trend this year. so glad is was amazingly easy for once this year</p>

<p>what percent is usually approximately a 5 and/or 4? I’ve heard its about 60% but I’m not sure.</p>

<p>I don’t really care what I get that much but it’s nice not to ruin a clean AP profile senior year, haha.</p>

<p>i did the same thing. i showed the chi2 value for that specific part as well</p>

<p>Around 23% get 5’s.</p>

<p>I hope you don’t mean 23% wrong and are just kidding, because that’s pretty high</p>

<p>I’ve hear close to 60 maybe 70 now.</p>

<p>He meant 23% of test takers get a 5.</p>

<p>chi squared was definitely not the athlete one if thats where you used it. idt you could use it for the political party one either…</p>

<p>I thought you meant the percentage of people, otherwise</p>

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<p>there were definitely no chi^2 on the frq…</p>

<p>i think he meant 23% of people taking the exam get 5s</p>

<p>last year it was 12.8% got a 5 and about 23% for a 4 so that might be it</p>

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<p>pretty scary…calc bc was 49.5%</p>

<p>is everyone sure?
I clearly remember the question saying something like “Determine if there is evidence of an association between men and membership in Party Y”</p>

<p>I used the chi-squared test for association, almost positive i got that one right. If you didnt use a chi-squared what did you use?</p>