Statistics > QUESTIONS & ANSWERS > Stats Medic - Sampling Distribution of Slopes Answer Key_ Does seat location matter? Part 1 (All)
Does seat location matter? Part 1 Row 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 Score 76 77 94 99 88 90 83 85 74 79 77 79 90 88 68 78 83 79 Row 4 4 4 4 4 4 5 5 5 5 5 5 Score 94 72 101 70 63 76 76 65 67 ... 96 79 96 1. Is this an observational study or an experiment? Why? 2. Why is it important to randomly assign students to seats rather than letting them choose their own seat? 3. How many variables are we measuring?_ _ Are they categorical or quantitative?_ What is the explanatory variable (x)?_ Response variable(y)? 4. Use www.stapplet.com or your calculator to make a scatterplot. Sketch it below. 5. Find the least squares regression line (LSRL):_ 6. What is the slope of the LSRL:__ Interpret the slope in the context of the problem. Do students who sit in the front rows do better than students who sit farther away? A teacher randomly assigned 30 students to seats at the beginning of the semester and then recorded their exam scores at the end of the semester. Here are the resul [Show More]
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