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AP Statistics

AP Statistics. November 14-18, 2011. Monday, November 14, 2011 AP Statistics A. Conversion problem. Mr. Jacobs can correct 150 quizzes in 50 minutes. His student aide can correct 150 quizzes in 75 minutes. Working together, how many minutes will it take them to correct 150 quizzes?

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AP Statistics

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  1. AP Statistics November 14-18, 2011

  2. Monday, November 14, 2011AP Statistics A • Conversion problem. Mr. Jacobs can correct 150 quizzes in 50 minutes. His student aide can correct 150 quizzes in 75 minutes. Working together, how many minutes will it take them to correct 150 quizzes? • Graphing lines. Sketch and label the following lines: • f(x)=3x-2 • g(x)=(-2/3)x+4 • h(x)=-4x-3 • i(x)=3x • j(x)=(4/5)x+1 3. Homework: HW #24, Ch 8: probs 2, 3, 6, due Tu, 11/15/2011

  3. Tuesday, November 15, 2011AP Statistics A warm-up • Satan contacts you with an unusual proposition: he wants you to find the middle 66.6% of a normally-distributed population, “for sentimental reasons,” he claims. Using the normal model N(0,1), what are the z-values for that mark? • What is the equivalent of the z-values if the population has a mean of 125 and a standard deviation of 15? • What is the cut-off value for the population of question 2 if Satan wants only the upper 66.6% of the normally-distributed population? (Use only the N(0,1) model. • Homework: HW #25, Ch 8: probs 8, 9, 11, 14, due W, 11/16/2011

  4. Wednesday, November 16, 2011AP Statistics A warm-up • In your calculator, enter the following data into L1: {6 10 14 19 21} • In L2, enter the following data: {5 3 7 8 12} • Run 1-var on each list and write down the means and standard deviations. • Graph the data as a scatterplot. We will later use the information to calculate the correlation coefficient by hand. • Homework: correct the past two homework assignments (or do them) reflecting the lectures in today’s class. Due tomorrow, Th, 11/17/2011.

  5. Thursday, November 17, 2011AP Statistics A warm-up • Conversion: On November 8, asteroid YU-55a came within 200,000 miles of the earth. How many earth diameters is that, if the earth’s diameter is 8,000 miles? • Enter the data from problem 5 in Chapter 8 into lists and calculate the regression line. Does it agree with the line given in the book? • HW #26, Ch 8: probs 17, 20, 24, 27, dueF, 11/18/2011

  6. Friday, November 18, 2011AP Statistics A warm-up • Write a paragraph describing the difference between association and correlation. • Do the TI Tips on pp. 183-84 of the textbook and create the residuals plot described on p. 184. • Homework: HW #27, Ch 8: probs 31, 35, 38, 41, dueM, 11/21/2011

  7. Homework: HW #28, Ch 8: probs 44, 47, 50, dueTu, 11/22/2011

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