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CPIS_342_Midterm_Exam

CPIS_342_Midterm_Exam - CPIS342MidtermExam...

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CPIS 342 Midterm Exam Due Date: Saturday, 25 th  December, 2010 Exam Type: Take home exam Problem 1:  What is data mining and data warehousing. In your answer address the  following a) In your own words, define data mining and data warehousing. b) Describe the steps involved in data mining when viewed as a process of  knowledge discovery. c) How is a data warehouse different from a database? How are they  similar? Problem 2:  Suppose a hospital tested the age and body fat data for 18 randomly  selected adults with the following result a) Calculate the mean, median and standard deviation of age and %fat. b) What is the mode of the attribute age? Comment on the data's modality  (i.e., bimodal, trimodal, etc.). c) Plot histograms of the attribute age with the following number of bins and  specify the binning strategy.

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