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For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic. For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
Group 1
Group 2
Group 3
48
51
61
50
62
53
52
60
63
1. What is your computed F-statistic?
2. What was the critical F value chosen?
3. Is there a significant difference between the groups?
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Distinct random variable
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Analysis of data sets assignment
Calculate descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Calculate the value of beta for each stock.
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