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Question

What does data preprocessing involve in the context of data mining?

a.

Predicting future data patterns

b.

Removing noisy data and filling missing values

c.

Selecting active variables for analysis

d.

Transforming data for mining algorithms

Posted under Data Warehousing and OLAP

Answer: (b).Removing noisy data and filling missing values Explanation:Data preprocessing involves tasks such as removing noisy data (out of range) and ensuring there are no missing values, contributing to improved data quality.

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Q. What does data preprocessing involve in the context of data mining?
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