DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Incomplete data are questions without answers or variables without observations. Even a small percentage of missing data can cause serious problems with the analysis leading to draw wrong conclusions and imperfect knowledge.
Detailed explanation-2: -Which is the correct process of data mining? Explanation: the correct order of the processes involved in the data mining process is Infrastructure, exploration, analysis, interpretation, and exploitation. 15.
Detailed explanation-3: -Important Points From the given option, the following statements are true regarding data mining: Predicting future trends based on information available. Analysing demographic information about customers. Credit risk analysis.
Detailed explanation-4: -When data are missing in a systematic way, you can simply extrapolate the data or impute the missing data by filling in the average of the values around the missing data.