Formula for calculating your bio scores!

Test Preparation AP Test Preparation
1

<p>To calculate your predicted score plug in the equation in your calculator and use the trace function.</p>

<p>Where x = number correct on MC
y = points earned on FRQ</p>

<p>y = -0.75x + 72.333 <-- for a 5
y = -0.75x + 59 <-- for a 4
y = -0.75x + 47 <-- for a 3</p>

<p>this is simplified from:
.9[x - 0.25(100-x)] + 1.5y = 86 <-- for a 5
.9[x - 0.25(100-x)] + 1.5y = 66 <-- for a 4
.9[x - 0.25(100-x)] + 1.5y = 48 <-- for a 3</p>

<p>Assuming that you didn't skip any questions, answered all.</p>

<p>This is a general guideline because the 5,4,3, cutoffs vary each year.</p>

<p>I'm using what the my Sparknotes book says: 86 for 5, 66 for 4, 48 for 3.</p>

<p>This is also on the 150 point system, but I think they changed it this year.</p>

<p>Credits to me, I came up with this formula. Hehe</p>

<p>I also have one for calculus and other tests, but I'll let others post.</p>

<p>Thanks, happy calculating.</p>

2

<p>what year is this?
the cliffs book i have have a 100pt system where you just take 0.6*(mc score) + (frq) and it's a 66 (i think) for a cutoff</p>

3

<p>Cliffs is accurate and simpler lol</p>

4

<p>Cliffs doesn't use the standard score calculation and cutoffs.</p>

<p>My formula uses the cutoff from the sparknotes powerpack book (a year or two old, I think) which is 86 from a 5.</p>

<p>people on this forum say its 81, but it shouldn't matter much in 5 pts, and besides an overestimate is better than underestimate.</p>