\f93 90 3 2 62 16 B. The slope would be .0028130629 A. The slope would be 0028430629 C. The slope would be 028430629 D. The slope would be .012840629 AOC\fQuestion 7 7_ Compute the value of the Pearson product-moment correlation coefficient for the data below: X 2 5 3 y 7 1 2 1 8.7 - 0.235 D.r . . 0.002Sep 25 at 7:36pn Instructions the letter of the correct answer. Question 6 1 pts 6. A researcher wants to determine if there is a relationship between the number of hours a person goes without sleeping (x) and the number of mistakes he makes on a simple test (y). The following data are recorded: n - 10. Ex - 50. Zy - 20. _ xy = 114. > x2- 300. What is the equation of the regression line? CY - - 0.6 . 0.28 8 = D.Y - 0.28 0.6x 8: - 0.28 -0.67 Ay - 0.6 0.28x Next Not seen Submit Quizse the letter of the correct answer. Question 4 1 pt A rate analyst for Meralco was asked to determine if there is a linear relationship between electrical consumption and the number of rooms in a single family dwelling. Since electricity consumption varies from month to month, he decided to study usage during the month of March. He collected the following, data. No. of rooms (x) 8 11 Kilowatt hours (v) 3.5 O B. 0. 58 O D.0.93 O A 0.39 C C. 0.79 NEXT - Submit Quizz 4.2 Pearson Product Moment of Correlation and Regression lysis :Sep 25 at 7:36pm z Instructions the letter of the correct answer. Question 5 1 pts 5. The table below shows the height, x. in inches, and the pulse rate. y, per minute, for 9 people. Find the correlation coefficient. 68 72 65 70 62 75 78 64 68 90 85 88 100 105 98 70 65 72 A-0.15 D C. -0.51 B.0.15 Next -https:/ tip.instructure.com/ course: _ 86 94 Question 8 1 pts Use the problem to answer 8-10. It is assumed that achievement test scores should be correlated with student's classroom performance. One would expect that students who consistently perform well in the classroom (tests, quizes, etc) would also perform well on a standardized achievement test (0 - 100 with 100 indicating high achievement). A teacher decides to examine this hypothesis. At the end of the academic year. she computes a correlation between the students achievement test scores (she purposefully did not look at this data until after she submitted students grades) and the overall g p.a. for each student computed over the entire year. The data for her class are provided below. Achievement G.P.A 98 3.6 96 2.7 94 3.1 88 4.0 91 3.2 77 3.0 86 3.8 71 2.6 59 3.0 163 2.2 2:7 Us75 2.6 72 2.9 86 24 85 34 71 2.8 93 3.7 90 3.2 62 16 8. Compute the correlation coefficient. O Ar-.524127623 or .52 D.r-.1524127123 or.152 OB- 352412/423 or,35 e Cr- 2524127623.or 25 Next . Quiz saved at 7:360m Submit QuizQuestion 9 9. What would be the slope of this data? Achievement G.P.A. 98 3.6 96 2.7 94 3.1 88 40 91 3.2 77 3.0 3.8 2.6 3.0 22 79 3.1 175 26 72 36
