2010 AP Computer Science Discussion

Test Preparation AP Mathematics & Computer Science
361

<p>Amarkov,</p>

<p>I understand that, I think they could have approached it differently where they wouldn’t need to remove anything from an arrayList. You could do it though, by setting up like temporary variables inside the loop, it would just be atrocious coding.</p>

362

<p>Oh, I see what you mean. Yeah, that would be a wonderful thing to do if you want to come up with code nobody can read.</p>

363

<p>hey guys do we have have to have correct coding convention? Like right margins. also do we get points for like “taking the longer route” on fr. like you do it longer way but u dont brute force it?</p>

364

<p>azndarkvader, as far as I know margins don’t count, but my teacher said that its nice to have correct margins because then the scorer might be more lenient about not closing off brackets. And I’d think it doesn’t matter how you get the solution, as long as you get it? But idk.</p>

<p>And how good is the curve for this test? I felt pretty confident about it but this is my school’s first year having it so I have no idea what the spectrum of grades usually is…</p>

365

<p>You can’t be marked off for incorrect indentation, but if you DO have correct indentation you can’t be marked off for missing brackets.</p>

<p>And you don’t inherently get points marked off for using a longer algorithm than what they expected, no. Again, the problem comes when you make a mistake; if you write your algorithm incorrectly, the test grader may not understand what you were trying to do, so it’s possible you’ll end up with not even partial credit.</p>

366

<p>Are the tests scanned in or read straight from the pink booklet? Cuz i wrote near the bottom of the page where it could get cut off if scanned…</p>

367

<p>When taking the calc ab test, it said that “you shouldn’t write beyond the borders”. So they might be cut of, I dunno…</p>

<p>But then again I wouldn’t really care cause you probably have gotten like 78 / 80 on the thing.</p>

368

<p>How many points do you think part b of the gridworld is gonna be worth? and part a altogether? (just gridworld)</p>

369

<p>What do you mean borders? It was just a sheet…</p>

370

<p>I dont know whether or not its just the CC community that thinks all these exams are easy, or if it’s everyone in general</p>

371

<p>How many points do you think part b of the gridworld is gonna be worth? and part a altogether? (just gridworld)</p>

372

<p>Each question is worth 9 points, so Part B may be 5 or 6 while Part A would be worth 3 or 4</p>

373

<p>If you have the Released 09 Exam, PM me, I’ll be willing to trade.</p>

374

<p>The FRQs are read straight out of the actual booklets.</p>

375

<p>so like i noticed for the frq that part b you almost always use methods from part a. was that true of 2010 frq?</p>

376

<p>@azndarkvader: That was what surprised me. NO question required use of a method you had previously written. Nowhere on the FRQ did it say “Assume that someMethod works as specified, regardless of what you wrote in part a” or whatever.</p>

377

<p>Yeah, it did.</p>

<p>At least I think so. I remember it saying that</p>

378

<p>No it didn’t…</p>

379

<p>Solutions to Free REsponse</p>

<p>Question 1: <a href=“http://ryan.ifupdown.com/wp-content/uploads/2010/05/CookieOrder.txt[/url]”>http://ryan.ifupdown.com/wp-content/uploads/2010/05/CookieOrder.txt&lt;/a&gt;
Question 2: <a href=“http://ryan.ifupdown.com/wp-content/uploads/2010/05/APLine.txt[/url]”>http://ryan.ifupdown.com/wp-content/uploads/2010/05/APLine.txt&lt;/a&gt;
Question 3: <a href=“http://ryan.ifupdown.com/wp-content/uploads/2010/05/Trail.txt[/url]”>http://ryan.ifupdown.com/wp-content/uploads/2010/05/Trail.txt&lt;/a&gt;
Question 4: <a href=“http://ryan.ifupdown.com/wp-content/uploads/2010/05/GridFinder.txt[/url]”>http://ryan.ifupdown.com/wp-content/uploads/2010/05/GridFinder.txt&lt;/a&gt;&lt;/p&gt;

380

<p>Alright, what are my chances of a 5? I will explain my answers on the test and please give me an estimated chance with curves and stuff.</p>

<p>Multiple choice - skipped 5 and I think I got like max 5 wrong.</p>

<p>Free Response - got the first 3 but totally failed GridWorld. </p>

<pre><code> 1. got part a word for word
part b i did increment and make variables for all that but i accidentally
used a foreach loop

               2. got it word for word except i dont know if i should have casted or
                  anything in the slope part. I made a new double variable.

               3. Got word for word except i forgot to do start + 1 in the for loop, i 
                   only wrote &lt; start;

              4. Part a I wrote some stuff down, I wrote 2 lines of code for b due to 
                  time.

</code></pre>

<p>Based on these circumstances, do I have any chance for a 5?</p>