So far, I feel pretty good about the content of AP Stats. Truth be told, I've studied it many times and for countless hours on my own. Additionally, I've taught/tutored it numerous times. I still made a mistake today, however. I said that the sum of the deviations will always add up to zero. While this is true for a distribution of data, it doesn't work out in a frequency table. My student, Valerie, pointed it out during the lesson. And I'm glad she did. Gotta be more careful next time.
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