DM 1

Which of the following best describes data mining?

• Extracting insights and patterns from large datasets

• Extracting valuable minerals from the earth

• Extracting oil and gas from underground reserves

• Extracting data from external sources for analysis

Which of the following is NOT a data mining task?

• Classification

• Regression

• Data visualization

• Clustering

What is the goal of association rule mining?

• Predicting numeric values

• Grouping similar instances together

• Discovering relationships between variables

• Identifying outliers in the data

Which of the following is an example of unsupervised learning in data mining?

• Classification

• Regression

• Clustering

• Association rule mining

Which data mining technique is used for reducing the dimensionality of the data?

• Classification

• Regression

• Feature selection

• Neural networks

What is the primary purpose of data preprocessing in data mining?

• Visualizing data patterns

• Developing predictive models

• Cleaning and transforming raw data

• Collecting data from various sources

What is the primary objective of outlier detection in data mining?

• Identifying anomalous or unusual data instances

• Finding the most frequent itemsets in a dataset

• Predicting numeric values based on historical data

• Classifying instances into predefined categories

Which data mining task is concerned with finding patterns that occur frequently together in a dataset?

• Clustering

• Association rule mining

• Classification

• Regression

In the KDD process, which stage involves selecting the appropriate data mining algorithms and applying them to the transformed data?

• Data cleaning

• Data integration

• Data mining

• Data transformation

What is the main goal of data mining?

• Extracting meaningful information from data

• Storing and organizing large datasets

• Building complex machine learning models

• Designing efficient database systems