I had issues with the variances when I went through it as well.
For Becker:
On the direct variances they skip over their own shortcut in the lecture. Look at the SAD, PURE, and DADS mnemonics. It took me 5-10 minutes to figure out what they were trying to do but once I did the direct variances were cake. You can look at the bottom left corner of the 1st page cheat sheet I used in my final days before the BEC exam for that bit (link at bottom of this post).
The overhead variances are a bit more of a pain. They have that one ugly example that Peter says to go over a couple of times. I did that and was still having issues (watched that part of the lecture multiple times). I finally just plain old memorized the formulas (really only 3 of them to memorize) and drew the chart on my white board with the formula until I could do it easily from memory. Those questions became much simpler, although still tricky. You can see (although possibly not read) this on the 1st page on the bottom right on my cheat sheet (link at bottom of post).
The Becker homework questions on variances are a pain in the @$$. They make you back into the inputs you need for everything. The actual exam was much simpler. You were given the inputs, you just had to know which inputs and what formula to use to calculate it. Overall it just took some really focused time on these two things. After spending that time and memorizing the OH variance stuff I didn't stress as much.
Link to my 2 page BEC cheat sheet:
http://www.dalesines.com/cpa-exam/BEC.pdf
RTCDQ!!.......Read the Cocka-Doody Question!
AUD-94; REG-97; BEC-93; FAR-94
see how I did it day by day:
http://cpa-exam.dalesines.com
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