The kids have been working with the graphing calculator doing different exercises at the beginning of class. The first week, the kids met with the Chemistry class to learn how to use the graphing calculator to model data.
This week, my wife, Deb, reviewed histograms, box plots, and calcs the first five or ten minutes with the Statistics class. One student, Angel, had a question about entering and calculating two variable statistics on the graphing calculator. Deb showed the class how to specify which data and how the calculations are displayed on the calculator.
I'm following Mrs. Daniel's AP Stats Blog. The textbook is difficult to read as there are many terms, formulas, example calculations to be done. I thought this was boring and it was difficult for me to determine what was important and reduce to a few pages of notes. However, Mrs. Daniels, a teacher of AP Stats, has a blog which contains for each chapter: summary of terms, notes to present each major section of each chapter, activities for the students to complete, and a reference sheet to hand out which includes important terms, examples of graphs, and formulas. I plan to present to the class Mrs. Daniel's presentation, have the students complete a couple of hands on activities, have them complete at home the overview questions.
Today, Friday Sept 19, we reviewed the chapter one overview which they had completed at home. We reviewed the drive time calculation exercise including mean, median, and standard deviation for the students' commute time to class. This is one exercise where we will calculate the standard deviation by hand and then in the graphing calculator. I explained the difference between the standard deviation s (std dev for a sample) and omega (std dev for the entire population). In the first calculation divide by (n-1) rather than n (where n is the number of data points) because of Beeson's correction. Since we are typically using a sample, not the entire population, of data, the standard deviation is probably understated square of each variance from mean, then dividing by n-1 before taking the square root.
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