Students in a management science class have just received their grades on the first test.

1)Students in a management science class have just received their grades on the first test. The instructor has provided information about the first test grades in some previous classes as well as the final average for the same students. Some of these grades have been sampled and are as follows:9 98 77 88 80 96 61 66 95 69 93 78 84 73 84 64 64 95 762)A sample of twenty automobiles was taken, and the miles per gallon (MPG), horsepower, and total weight were recorded. Develop a linear regression model to predict MPG using horsepower as the only independent variable. Develop another model with weight as the independent variable. Which of these two models is better? Explain. Weight 1797 2199 2404 2611 3236 2606 2580 2507 2922 2434 3248 2812 3382 3197 4380 4036

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