AP Calculus Curve

Discus: SAT/ACT Tests and Test Preparation: May 2003 Archive: AP Calculus Curve
 By Chemos (Chemos) on Thursday, May 08, 2003 - 06:18 pm: Edit

Hi!
I have a question! What is the curve like for ap calc? I know it varies every yeear, but approximately, how much % gives you a 5?

I think the max raw score is 108, so wuts the cut off for a 5? Thanks!~~~

 By Silentopen (Silentopen) on Thursday, May 08, 2003 - 08:54 pm: Edit

In '98 it was 65.

silentOpen
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With the silent... and the open... and the... yeah.

 By Chemos (Chemos) on Friday, May 09, 2003 - 01:01 pm: Edit

ne1 else?

 By Qwerasdf (Qwerasdf) on Friday, May 09, 2003 - 04:47 pm: Edit

My calc teacher probably lied to us:

84 - 108 = 5
~64 - 83 = 4

I don't know any lower because I've only scored 5s based on his scale using his hard@\$\$ tests.

Here's how you do it using the college board tables.

http://www.collegeboard.com/ap/pdf/aptechman_calc-bc_3xbp.pdf

Go there, scroll to page 8.

Go to Percent at AP5 for 2001. I'm sure the College Board uses the scores from more than just 1 yr, but here's just for simplicty's sake...

38.8% of the nation gets 5's. You take that number and you subtact it from 50%.

0.5 - 0.388 = 0.112.

Consult a normal distribution table:

http://people.hofstra.edu/faculty/Stefan_Waner/RealWorld/normaltable.html

Now 0.112 falls at around 0.31 on the table.

Scroll to page 9 on the College Board guide, and find the Composite Std. Deviation.

It's 22.98

Take that and multiply by wat u got on the table.

22.98 * 0.31 = 7.1238

Now on the College Board guide look at the COMPOSITE MEAN. That's 53.4. Add the mean to what you got above....

You get: 60.5238. Lets say 61 gets you a 5. I say close enough to 65. I'd go with 65 though. In fact, I'm so pessimistic I would go with the 84 figure our calc teacher gave us =]. Maybe thats why our teacher gets a 75% 5 rate, and a 97% passing rate.

 By Qwerasdf (Qwerasdf) on Friday, May 09, 2003 - 04:51 pm: Edit

BTW I just did those calculations above, except I averaged the table's values.

For example, instead of taking 2001's std deviation for composite, I averaged it for the 5 years.

I worked it out and the 5 cutoff should be 62.9. Lets make that 63...

 By Thehof (Thehof) on Friday, May 09, 2003 - 06:11 pm: Edit

Does anyone know what the "curve" was for the 1998 Calc AB test?

How many points give u a 5?

 By Eurostar (Eurostar) on Saturday, May 10, 2003 - 01:09 pm: Edit

Ha...not only does our teacher have a 100% passing rate, the entire SCHOOL does!

 By Aawesome (Aawesome) on Sunday, May 11, 2003 - 09:29 am: Edit

75-108 is a five.
So you can get like 38 on both sections and get a very low five - hey but still a five

 By Silentopen (Silentopen) on Monday, May 12, 2003 - 06:16 pm: Edit

What year is that Aawesome? I think they redo it every year. I know in '98 it was 65/108.

silentOpen