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Use data from problem 19 of Ch. 17 of KKNR (ex1719_XXX.dat, where XXX is your Individual Data Set Number from Blackboard) from the Best Mutual
Use data from problem 19 of Ch. 17 of KKNR (ex1719_XXX.dat, where XXX is your Individual Data Set Number from Blackboard) from the "Best Mutual Funds" of 1996 from U.S. News & World Report. Variables in this dataset (in order) are: fund,cat (fund category: 1 = Aggressive growth, 2 = Long-term Growth, 3 = Growth and income, 4 = income),load (N = no load, L = load),vol (volatility: letter grade from A+ to F, with A+ = least volatile and F = most volatile),OPI (Overall Performance Index; higher is better). See textbook for more details.
- (P) Create and apply a format that will appropriately identify the 4 levels of the fund category [cat] variable (Hint: See Lab 2). Also create meaningful labels for the OPI and cat variable. The labels/formatting will improve the readability of the boxplot below.
- (P, O)Create a boxplot of OPI by fund category. Make sure the mean is plotted for each group. (Hint: To allow the names of the 4cat variable levels to be fully printed, create a horizontal boxplot. Do this by: (1) turning on ODS graphicsif not already onand (2) using theHORIZONTAL option in theBOXPLOT statement.)
- (W, P, O)In a small table, report the sample size, mean, standard deviation, minimum, and maximum of OPI for each fund category group. Comment on whether the standard deviations are similar across groups.
- (W) In the context of this problem, write three forms of the one-way ANOVA model, along with the corresponding null and alternative hypotheses.
- (P, O)Use SAS to perform an ANOVA and to obtain both Tukey's and Scheff's tests for multiple pairwise comparisons.
- (W) Summarize your conclusions..
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