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Question

Why is having data at the detailed level in the data warehouse important for data mining?

a.

It simplifies the data mining algorithms.

b.

It reduces the project costs.

c.

Data mining techniques produce better results with data at the lowest grain.

d.

It enables faster data processing.

Answer: (c).Data mining techniques produce better results with data at the lowest grain. Explanation:Data mining techniques produce better results when data is available at the lowest granularity.

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Q. Why is having data at the detailed level in the data warehouse important for data mining?

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