hw2.pdf - Homework 2 Due 6/4 Note Show all your work You...

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Homework 2 Due : 6/4 Note: Show all your work. You can do manual calculations, use R, or use any software (e.g., Weka, Excel, JMP) to answer the questions unless otherwise noted. In any case, you need to attach the relevant file(s) or screenshot(s) that shows how you obtained your answers. Problem 1 ( 20 points) Consider the dataset a2-p1.arff which is posted along with this assignment. It has 190 instances and 7 attributes. The same dataset in Excel format is also posted. (1). Show the mean, median, and standard deviation of the attribute A 1. (2). Show Q1, Q2, and Q3, and plot the boxplot of the attribute A 1. In your boxplot, you don’t need to show outliers separately. (3). Detect outliers using the IQR method and show the A 1 values of the detected outliers. When detecting outliers, use only the A 1 values. You must use the method we discussed in the class. You may use a tool for simple calculations but you should not use a tool to determine outliers.
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