# Lab 1 - 4[5 points A sketch of the Boxplot(s for wine...

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STAT 511: Statistical Methods Spring 2010 - Lab 1 Due Thursday, March 11, 2010 Part 1: Wine Consumption vs Death Rates. Some people believe that drinking mod- erate amounts of wine is good for your heart. Use any statistical software of your choice to analyze Wine Consumption and Death Rate data; the dataset is available on the course webpage. Your ﬁnal report should include the following: 1. [5 points] A sketch of the Stem-Leaf plot of both wine consumption and death rate. Describe the shape of the distributions. 2. [5 points] A Histogram of wine consumption and death rate. Again describe the shape of the distributions. 3. [5 points] A summary statistics table including the 5 number summary, mean, and standard deviation of both variables.
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Unformatted text preview: 4. [5 points] A sketch of the Boxplot(s) for wine consumption and death rate. Do you see any outliers? 5. [5 points] Report the value of r ; the sample correlation coeﬃcient. What does it tell you about the relationship between wine consumption and death rate? 6. [5 points] Compute the covariance between wine consumption and death rate. Part 2: Assessing Normality. The ﬁle name “data.xls” contains three sample datasets. 1. [5 points] Use a QQ-plot to determine which of the three samples is coming from a normal distribution. 2. [5 points] Can we use the QQ-plot to determine the mean and standard deviation of the sample that is normally distributed? If yes, report that mean and standard deviation. 1...
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