<p>I'm wondering if I could write "∵" for "because" and "∴" for "therefore" in the FRQs in the statistics exam...</p>
<p>I doubt it. I have no idea what those mean or have ever seen them before.</p>
<p>The therefore symbol is used more in formal logic than anything else.
I don’t know about the colon.</p>
<p>I wouldn’t do it. I wouldn’t use any abbreviations of any sort on an AP exam unless they’re pretty standard in the field…like, idk, I would use a line over the 3 after the decimal in 33.3% to signify a repeating number. But, when writing my free response I wouldn’t say “Oh well this happens b/c of that.”</p>
<p>Now, I don’t know if they’re ALLOWED or not…but the point is that your grader might not be familiar with the symbol and be confused about your answer.</p>
<p>I use the therefore symbol all the time in AP Stats, and my teacher specifically taught us to use it. Therefore is a pretty universal symbol in my opinion; I don’t know about the because symbol though as I’ve never seen it before.</p>
<p>Aww man I used the “b/c” because symbol on the AP Chem test b/c (lol) I was running out of time. crap crap crap :(</p>
<p>^Should be fine; the graders aren’t stupid.</p>
<p>And the dots are somewhat universal. But even if a grader doesn’t understand, he/she should be able to figure it out. I used the therefore dots on several exams this year.</p>
<p>Isn’t it a universal symbol?</p>