Data Science MCQs with answers Page - 25

Here, you will find a collection of MCQ questions on Data Science. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which EDA technique is used to visualize the relationship between two continuous variables with a line connecting data points?

  • (A) Scatter Plot
  • (B) Histogram
  • (C) Bar Chart
  • (D) Box Plot

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Q. What does the term "outlier" refer to in the context of EDA?

  • (A) A point that falls within the data range
  • (B) A data point that is part of the main cluster
  • (C) A data point that falls far from the rest
  • (D) A data point that is missing

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Q. What type of data visualization is commonly used in EDA to represent the distribution of a categorical variable?

  • (A) Scatter Plot
  • (B) Box Plot
  • (C) Histogram
  • (D) Bar Chart

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Q. In data modeling, what is the term for the process of determining the structure and organization of data in a database system?

  • (A) Data Mining
  • (B) Data Architecture
  • (C) Data Integration
  • (D) Data Transformation

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Q. What is the primary purpose of a data warehouse in data modeling?

  • (A) To visualize data relationships
  • (B) To predict future data
  • (C) To store and manage historical data
  • (D) To calculate summary statistics

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Q. Which data modeling approach is commonly used for representing data in a network of nodes with connections between them?

  • (A) Relational Modeling
  • (B) Bayesian Network Modeling
  • (C) Graph Database Modeling
  • (D) Entity-Relationship Modeling

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Q. In data modeling, what is the term for the process of organizing and storing data in a structured format suitable for analysis?

  • (A) Data Aggregation
  • (B) Data Cleaning
  • (C) Data Wrangling
  • (D) Data Warehousing

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Q. What is the primary goal of time series modeling in data modeling?

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

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Q. In data modeling, what is the term for the process of transforming data into a numerical format for machine learning models?

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

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Q. What is the primary purpose of a data mart in data modeling?

  • (A) To visualize the data distribution
  • (B) To store and manage data for a specific task
  • (C) To define data attributes and properties
  • (D) To calculate summary statistics

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