Provide an approprials response. The data below are the number of hours worked (per week) and the final grades of 9 randomly selected students from a drama class. Calculate the linear correlation coefficient. Hours worked, $x$ Final Grade, $y$ 5 8 11 9 14 7 20 13 10 89 77 71 73 62 83 46 67 73 -0.991 -0.888 -0.918 -0.899
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Provide an appropriate response. The data below are the number of hours worked (per week) and the final grades of 9 randomly selected students from a drama class. Calculate the linear correlation coefficient. Hours worked, x | 3 | 6 | 9 | 7 | 12 | 5 | 18 | 11 | 8 Final Grade, y | 91 | 79 | 73 | 75 | 64 | 85 | 48 | 69 | 75 -0.899 -0.918 -0.991 -0.888
Sri K.
4. (10pt) Assume you've collected data on 6 students that will tell you how many hours they work per week and their grade point averages (GPAs). The information is shown below: Case X Y Zx Zy Zx * Zy 1 10 3.80 -0.66 0.76 2 20 3.44 0 0.14 3 40 2.50 1.32 -1.48 4 35 2.81 0.99 -0.95 5 0 4.00 -1.32 1.10 6 15 3.62 -0.33 0.45 a) Determine Zx * Zy b) Calculate the correlation coefficient. c) What does this correlation coefficient indicate about the relationship? d) Set up the null hypothesis; test at 0.05 level of significance and state your conclusion.
Madhur L.
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