Assignment 8 - Lesson 8 - Correlation

Assignment 8 - Lesson 8 - Correlation - Problem 1....

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Problem 1. BDV-164-18: Drug Abuse A survey was conducted in the United States and 10 countries of Western Europe to determine the percentage of teenagers who had used marijuana and other drugs. The results are summarized in the attached data file. 1. Create a scatterplot. 2. Is there a linear association between the percent of teens who have used marijuana and the percent who have used other drugs? yes Are there any potential outliers? May be 3. What is the correlation between the two variables? Write a brief description of the association. weak 4. Do these results confirm that marijuana is a "gateway drug," that is, that marijuana use leads to the use of other drugs? Explain. Problem 2. TR9-513-15: Cereal Killers

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1. Use the amounts of fat and the measured calorie counts in the data provided. Is there a correlation? 2. Use the amounts of sugar and the measured calorie counts in the data provided. Is there a correlation? 3.
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This note was uploaded on 06/09/2011 for the course STAT 113 taught by Professor Thaler during the Spring '11 term at CUNY Hunter.

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Assignment 8 - Lesson 8 - Correlation - Problem 1....

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