Data Science MCQs with answers Page - 26

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Q. Which data modeling approach is primarily used for representing data as a collection of events and their relationships?

  • (A) Relational Modeling
  • (B) Bayesian Network Modeling
  • (C) Event-Driven Modeling
  • (D) Entity-Relationship Modeling

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Q. In data modeling, what is the term for the process of filling in missing data values by estimating them from available data?

  • (A) Data Imputation
  • (B) Data Cleaning
  • (C) Data Transformation
  • (D) Data Encoding

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Q. What is the primary goal of ensemble modeling techniques in data modeling?

  • (A) To group similar data points
  • (B) To predict future data
  • (C) To improve model accuracy
  • (D) To calculate summary statistics

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Q. 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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Q. 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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Q. 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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Q. 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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Q. 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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Q. 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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Q. 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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