Top 50 Data Mining Interview Questions & Answers

Data Mining is a process of extracting useful information from data warehouses or from bulk data. This article contains the Most Popular and Frequently Asked Interview Questions of Data Mining along with their detailed answers. These will help you to crack any interview for a data scientist job. So let’s get started.

1. What is Data Mining?

Data mining refers to extracting or mining knowledge from large amounts of data. In other words, Data mining is the science, art, and technology of discovering large and complex bodies of data in order to discover useful patterns.

2. What are the different tasks of Data Mining?

The following activities are carried out during data mining:

• Classification
• Clustering
• Association Rule Discovery
• Sequential Pattern Discovery
• Regression
• Deviation Detection

3. Discuss the Life cycle of Data Mining projects?

The life cycle of Data mining projects:

• Business understanding: Understanding projects objectives from a business perspective, data mining problem definition.
• Data understanding: Initial data collection and understand it.
• Data preparation: Constructing the final data set from raw data.
• Modeling: Select and apply data modeling techniques.
• Evaluation: Evaluate model, decide on further deployment.
• Deployment: Create a report, carry out actions based on new insights.

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