Data Preprocessing Concepts

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Questions and Answers

What is the primary goal of data preprocessing?

  • To complicate the dataset
  • To prepare raw data for further analysis (correct)
  • To reduce the size of the dataset
  • To make the dataset more comprehensive

Which of the following is a common data preprocessing task?

  • Data storage
  • Data cleaning (correct)
  • Data mining
  • Data visualization

What does data transformation typically involve?

  • Converting data from one format or structure into another (correct)
  • Compressing the size of the dataset
  • Changing the programming language of the data
  • Deleting irrelevant data points

Why is feature scaling important in data preprocessing?

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What is the purpose of data cleaning?

<p>To ensure data quality and accuracy (B)</p> Signup and view all the answers

Which of the following is a basic method of handling missing data?

<p>Ignoring the missing values or removing rows/columns (C)</p> Signup and view all the answers

What is the goal of data integration?

<p>Combining data from multiple sources into a unified dataset (D)</p> Signup and view all the answers

What is the term for selecting a subset of relevant features from a dataset?

<p>Feature Selection (A)</p> Signup and view all the answers

Which of the following is NOT a benefit of data preprocessing?

<p>Increased data redundancy (A)</p> Signup and view all the answers

Flashcards

Data Preprocessing Goal?

Prepare raw data for further analysis

What is Data Cleaning?

Correcting inconsistencies and handling missing values

Data Transformation?

Converting data into a suitable format or structure

Purpose of Data Cleaning?

Ensure data quality and accuracy

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Handle Missing Data?

Ignoring the missing values or removing rows/columns

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Data Integration?

Combining data from multiple sources

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Feature Selection?

Selecting relevant features

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Data Transformation?

Converting data from one format or structure into another

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Data Preprocessing?

NOT a benefit of Data Preprocessing: Increased data redundancy

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