Advanced Data Analytics and Machine Learning Quiz
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Questions and Answers

What is the main difference between supervised and unsupervised machine learning methods?

  • Supervised methods do not require human experts, while unsupervised methods need guidance from experts.
  • Supervised methods rely on human experts to process data, while unsupervised methods autonomously discover patterns in data. (correct)
  • Supervised methods are used for clustering, while unsupervised methods focus on regression.
  • Supervised methods are more complex than unsupervised methods.

In machine learning, what type of problem involves estimating the mathematical relationship between continuous variables?

  • Association Problems
  • Classification Problems
  • Regression Problems (correct)
  • Clustering Problems

What is the main goal of a classification problem in machine learning?

  • To identify continuous variables
  • To discover patterns autonomously
  • To estimate to which predefined class a sample belongs (correct)
  • To compute mathematical relationships

What is the primary function of a boundary line in a classification problem?

<p>To classify new examples based on the line's location and shape (B)</p> Signup and view all the answers

Which machine learning method requires data sets that have been processed by human experts?

<p>Regression (D)</p> Signup and view all the answers

In machine learning, what does an unsupervised method like Clustering do?

<p>Autonomously discovers patterns in data (A)</p> Signup and view all the answers

What is the mode of a data sample?

<p>The value that occurs the most often (D)</p> Signup and view all the answers

What is a measure of how far each value in a dataset is from the mean?

<p>Standard deviation (D)</p> Signup and view all the answers

What does the range statistic describe?

<p>The spread of values in the sample (D)</p> Signup and view all the answers

Which central tendency measure leaves out an important part of the distribution?

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

What does the standard deviation measure in a data set?

<p>Variability of values from the mean (C)</p> Signup and view all the answers

In machine learning, what is the purpose of detecting patterns in data?

<p>To uncover patterns for future data predictions (C)</p> Signup and view all the answers

What is the main purpose of Principal Component Analysis (PCA)?

<p>To convert correlated variables into linearly uncorrelated variables (C)</p> Signup and view all the answers

Which machine learning method uses Bayes’ theorem with strong independence assumptions between features?

<p>Naive Bayes classifiers (B)</p> Signup and view all the answers

What is the objective of Singular Value Decomposition (SVD) in linear algebra?

<p>To factorize a real complex matrix into three matrices (C)</p> Signup and view all the answers

What does Independent Component Analysis (ICA) focus on revealing?

<p>Hidden factors underlying random variables (B)</p> Signup and view all the answers

In what scenario would Ordinary Least Squares Regression be used?

<p>To fit a straight line through a set of points (B)</p> Signup and view all the answers

Which statistical technique is characterized by converting correlated variables into linearly uncorrelated variables?

<p>Singular Value Decomposition (SVD) (A)</p> Signup and view all the answers

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