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1、Slide 4- 1,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Active Learning Lecture Slides For use with Classroom Response Systems,Elementary Statistics: Picturing the World Fourth Edition by Larson and Farber,Chapter 9: Correlation and Regression,Slide 9- 2,Copyright 2007
2、 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Determine the type of correlation between the variables. Positive linear correlation Negative linear correlation No linear correlation,Slide 9- 3,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Determine the ty
3、pe of correlation between the variables. Positive linear correlation Negative linear correlation No linear correlation,Slide 9- 4,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Calculate the correlation coefficient r, for temperature (x) and number of cups of coffee sold
4、 per hour (y). 0.946 0.973 2.469 81.760,Slide 9- 5,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Calculate the correlation coefficient r, for temperature (x) and number of cups of coffee sold per hour (y). 0.946 0.973 2.469 81.760,Slide 9- 6,Copyright 2007 Pearson Educa
5、tion, Inc. Publishing as Pearson Addison-Wesley,Find the t test statistic to determine if the correlation coefficient for temperature (x) and number of cups of coffee sold per hour (y) is significant. 10.8 0.973 11.1 1.8,Slide 9- 7,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison
6、-Wesley,Find the t test statistic to determine if the correlation coefficient for temperature (x) and number of cups of coffee sold per hour (y) is significant. 10.8 0.973 11.1 1.8,Slide 9- 8,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Find the equation of the regress
7、ion line for temperature (x) and number of cups of coffee sold per hour (y).,Slide 9- 9,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Find the equation of the regression line for temperature (x) and number of cups of coffee sold per hour (y).,Slide 9- 10,Copyright 2007
8、Pearson Education, Inc. Publishing as Pearson Addison-Wesley,The equation of the regression line for temperature (x) and number of cups of coffee sold per hour (y) is Predict the number of cups of coffee sold per hour when the temperature is 48. 41.4 30.7 13.8 50.5,Slide 9- 11,Copyright 2007 Pearson
9、 Education, Inc. Publishing as Pearson Addison-Wesley,The equation of the regression line for temperature (x) and number of cups of coffee sold per hour (y) is Predict the number of cups of coffee sold per hour when the temperature is 48. 41.4 30.7 13.8 50.5,Slide 9- 12,Copyright 2007 Pearson Educat
10、ion, Inc. Publishing as Pearson Addison-Wesley,Calculate the coefficient of determination r2, for temperature (x) and number of cups of coffee sold per hour (y). 0.946 0.973 2.469 81.760,Slide 9- 13,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Calculate the coefficient
11、 of determination r2, for temperature (x) and number of cups of coffee sold per hour (y). 0.946 0.973 2.469 81.760,Slide 9- 14,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Find the standard error of the estimate se, for temperature (x) and number of cups of coffee sold
12、 per hour (y). 0.139 12.47 1.78 1.33,Slide 9- 15,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,Find the standard error of the estimate se, for temperature (x) and number of cups of coffee sold per hour (y). 0.139 12.47 1.78 1.33,Slide 9- 16,Copyright 2007 Pearson Educat
13、ion, Inc. Publishing as Pearson Addison-Wesley,Construct a 95% prediction interval for the number of cups of coffee sold per hour (y) when the temperature (x) is 48. se 1.33, 11.255 y 16.255 10.241 y 17.269 10.431 y 17.079 12.707 y 14.803,Slide 9- 17,Copyright 2007 Pearson Education, Inc. Publishing
14、 as Pearson Addison-Wesley,Construct a 95% prediction interval for the number of cups of coffee sold per hour (y) when the temperature (x) is 48. se 1.33, 11.255 y 16.255 10.241 y 17.269 10.431 y 17.079 12.707 y 14.803,Slide 9- 18,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-
15、Wesley,To predict the price of a used Toyota Camry, use the equation where x1 is the age of the car (in years) and x2 is the mileage (in thousands). Predict the y-value for x1 = 6 and x2 = 54. $17,612 $15,982 $18,526 $22,174,Slide 9- 19,Copyright 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley,To predict the price of a used Toyota Camry, use the equation where x1 is the age of the car (in years) and x2 is the mileage (in thousands). Predict the y-value for x1 = 6 and x2 = 54. $17,612 $15,982 $18,526 $22,174,
