Data Science MCQs with answers Page - 18

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. What is the term for the process of organizing and storing data in a structured format that enables efficient retrieval?

  • (A) Data Integration
  • (B) Data Transformation
  • (C) Data Aggregation
  • (D) Data Warehousing

A

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Q. What is the term for the process of converting data into a structured format suitable for analysis and storage?

  • (A) Data Integration
  • (B) Data Transformation
  • (C) Data Wrangling
  • (D) Data Cleaning

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Q. Which data collection method involves gathering data by directly interacting with subjects or participants?

  • (A) Surveys
  • (B) Observations
  • (C) Experiments
  • (D) Sampling

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Q. Which of the following is NOT a common data preprocessing technique?

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

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Q. In data collection, what is the term for data that has not been processed or analyzed and is in its original form?

  • (A) Raw Data
  • (B) Processed Data
  • (C) Analytical Data
  • (D) Structured Data

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Q. What is the term for the process of selecting a representative subset of a larger dataset for analysis?

  • (A) Data Sampling
  • (B) Data Integration
  • (C) Data Transformation
  • (D) Data Cleaning

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Q. What is the primary goal of data preprocessing in the context of machine learning?

  • (A) To make the data more complex
  • (B) To prepare the data for analysis
  • (C) To reduce the size of the dataset
  • (D) To create visualizations of the data

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Q. In data preprocessing, what is the term for the process of converting categorical data into binary format?

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

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Q. What is the term for the process of handling missing data in a dataset by estimating values based on available data?

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

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Q. Which type of data collection method involves asking questions to gather information from respondents?

  • (A) Observations
  • (B) Experiments
  • (C) Surveys
  • (D) Interviews

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