
Exploring Data Mining Concepts
Authored by M Kanipriya
Computers
University
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the main steps in the data mining process?
Data Collection, Data Cleaning, Data Integration, Data Selection, Data Transformation, Data Mining, Pattern Evaluation, Knowledge Presentation
Data Analysis, Data Reporting, Data Visualization
Data Generation, Data Simulation, Data Forecasting
Data Storage, Data Retrieval, Data Archiving
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Describe the importance of data collection in data mining.
Data collection is optional in data mining as analysis can be done with assumptions.
Data collection is only important for large datasets, not for small ones.
Data collection has no impact on the quality of insights derived from data mining.
Data collection is essential in data mining as it ensures the availability of accurate and relevant data for analysis.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
List three common data collection techniques.
Case studies
Surveys, interviews, observations
Data mining
Focus groups
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of data preprocessing in data mining?
The purpose of data preprocessing is to prepare and clean data for effective analysis in data mining.
To increase the size of the dataset for analysis.
To store data in a more complex format.
To visualize data trends in real-time.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name two methods used for data cleaning during preprocessing.
Removing duplicates, Handling missing values
Data visualization
Feature selection
Data normalization
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can data normalization be achieved?
Using random sampling to select data points
Applying linear regression to the dataset
Removing outliers from the data set
Data normalization can be achieved using techniques like min-max scaling, z-score standardization, or decimal scaling.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of data transformation in data mining?
Data transformation prepares and optimizes data for effective analysis in data mining.
Data transformation is irrelevant to data mining processes.
Data transformation eliminates the need for data analysis.
Data transformation is only used for data storage.
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