Data Modeling MCQ Questions and Answers

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What is the primary objective of feature selection in data modeling?

A) To increase model complexity B) To improve model accuracy C) To reduce dimensionality D) To represent data relationships

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Answer & Solution

Answer: Option C

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In data modeling, what is the term for the process of filling in missing data values with estimated or imputed values?

A) Data Aggregation B) Data Cleaning C) Data Imputation D) Data Transformation

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Answer & Solution

Answer: Option C

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Which data modeling approach represents data as a collection of objects with their attributes and behaviors?

A) Hierarchical Modeling B) Relational Modeling C) Object-Oriented Modeling D) Entity-Relationship Modeling

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Answer & Solution

Answer: Option C

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What is the primary purpose of a Data Dictionary in data modeling?

A) To visualize the data distribution B) To represent data relationships C) To define data attributes and properties D) To create summary statistics

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Answer & Solution

Answer: Option C

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In data modeling, what is the term for the process of selecting the most relevant data attributes for model building?

A) Data Aggregation B) Data Cleaning C) Feature Selection D) Data Transformation

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Answer & Solution

Answer: Option C

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In data modeling, what is the term for the process of representing data as objects and their interactions in software applications?

A) Hierarchical Modeling B) Relational Modeling C) Object-Oriented Modeling D) Entity-Relationship Modeling

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Answer & Solution

Answer: Option C

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What is the primary purpose of a decision tree model in data modeling?

A) To represent the structure of a database B) To predict outcomes C) To visualize data relationships D) To calculate summary statistics

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Answer & Solution

Answer: Option B

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Which data modeling approach represents data as a collection of attributes and their dependencies in a directed acyclic graph?

A) Relational Modeling B) Bayesian Network Modeling C) Object-Oriented Modeling D) Entity-Relationship Modeling

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Answer & Solution

Answer: Option B

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In data modeling, what is the term for the process of transforming data into a format suitable for storage and retrieval?

A) Data Aggregation B) Data Wrangling C) Data Encoding D) Data Integration

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Answer & Solution

Answer: Option D

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What is the primary goal of clustering in data modeling?

A) To increase model complexity B) To group similar data points C) To improve model accuracy D) To calculate summary statistics

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Answer & Solution

Answer: Option B

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Data Modeling MCQ Questions and Answers | Data Science MCQs