Machine Learning Concepts and Techniques Quiz
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Questions and Answers

What type of response variable does regression typically deal with?

  • Ordinal
  • Qualitative
  • Quantitative (correct)
  • Categorical

    • Which statistical learning method assesses the quality of fit using Mean Squared Error?

  • Lasso
  • Ridge
  • Regression (correct)
  • Classification

    • In the bias-variance tradeoff, what does variance measure?

  • Features considered in the model
  • Average error in predicting a new observation
  • Error introduced by approximating a real-life problem
  • Sensitivity of the model to training data (correct)

    • Why is logistic regression preferred over linear regression with ordinary least squares (OLS) for classification predictions?

    <p>Errors from linear regression won't be normally distributed</p> Signup and view all the answers

    What does the bias term represent in the bias-variance tradeoff?

    <p>Error introduced by approximating a real-life problem</p> Signup and view all the answers

    What does the test error measure in statistical learning methods?

    <p>Average error in predicting a new observation</p> Signup and view all the answers

    What is the primary difference between classification and clustering?

    <p>Classification involves predicting a category for a new observation, while clustering involves grouping similar observations together.</p> Signup and view all the answers

    What is the main goal of supervised learning?

    <p>To predict outcomes using labeled data.</p> Signup and view all the answers

    What is a characteristic of non-parametric methods in estimation?

    <p>They do not make assumptions about the function form of f.</p> Signup and view all the answers

    Which type of statistical learning places emphasis on interpretability and precision?

    <p>Statistical learning</p> Signup and view all the answers

    How does unsupervised learning differ from supervised learning?

    <p>Supervised learning requires labeled data, while unsupervised learning does not.</p> Signup and view all the answers

    What distinguishes descriptive statistics from inferential statistics?

    <p>Descriptive statistics provide a summary of data, while inferential statistics make inferences about a larger set based on a smaller sample.</p> Signup and view all the answers

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