Regression Activity

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Mathematics

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Instructions: Read the following scenario, and then answer the questions that follow. (5 points)

In our first weeks of this course, we noted that there tends to be a correlation between number of hours kids spend watching violent TV and their levels of aggressiveness. Imagine we conduct a study where we determine the number of hours of violent TV that ten middle-schoolers watch in a one week period (which can range from 0 to 168, provided they never sleep!) and teacher ratings of the child’s aggressiveness (0 = not at all aggressive to 10 = extremely aggressive). Fill in the blank spaces in following chart to assess this TV viewing / aggressiveness relationship:

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Assignment #7 – Regression Activity Instructions: Read the following scenario, and then answer the questions that follow. (5 points) In our first weeks of this course, we noted that there tends to be a correlation between number of hours kids spend watching violent TV and their levels of aggressiveness. Imagine we conduct a study where we determine the number of hours of violent TV that ten middle-schoolers watch in a one week period (which can range from 0 to 168, provided they never sleep!) and teacher ratings of the child’s aggressiveness (0 = not at all aggressive to 10 = extremely aggressive). Fill in the blank spaces in following chart to assess this TV viewing / aggressiveness relationship: TV violence viewed (X) 70 68 56 44 28 15 10 6 3 0 Aggressiveness Rating (Y) 9 9 8 6 5 3 3 2 3 2 X2 Y2 XY Total A. What is the independent (predictor) variable? What is the dependent (criterion) variable? What is the researcher trying to determine? B. What is the regression weight (b)? Show your work (round to three decimal places here). C. What is the regression intercept (a)? Show your work (round to three decimal places here) D. What is the regression equation (Y’)? (use three decimal places here) E. Robert watches 20 hours of violent TV each week. What aggressiveness rating would you expect his teacher to give him? (For your final answer, please round to two decimal places, even though the aggressiveness scale ranges from 0 to 10)
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Assignment #7 – Regression Activity
Instructions: Read the following scenario, and then answer the questions that follow. (5 points)
In our first weeks of this course, we noted that there tends to be a correlation between number of
hours kids spend watching violent TV and their levels of aggressiveness. Imagine we conduct a
study where we determine the number of hours of violent TV that ten middle-schoolers watch in a
one week period (which can range from 0 to 168, provided they never sleep!) and teacher...


Anonymous
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