Today is Columbus Day, or Indigenous Peoples' Day. While California schools don't close for the holiday, some districts hold a PD day today. My district, of course, had our PD day a week ago. Today in Stats, we cover the next three pages in Chapter 6, on Normal distributions. Here the students learn about finding the area between two z-scores. On the TI-83, this is the invNorm function. As for the TI-84, invNorm is just like the normalpdf and normalcdf functions -- mu and sigma are entered. This lesson goes more smoothly this time, since by now I'm expecting the TI-84 version of invNorm to be beefed-up from the TI-83 version. The exception, though, is in fourth period Ethnostats. For most of Chapter 6, the lessons for general Stats and Ethnostats are nearly identical. But since fourth period is larger than either second or fifth periods, everything goes more slowly. This includes the Warm-Up -- I must keep telling the students to be quiet while I read about the Hispanic Her...
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