Regression Analysis Overview

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Questions and Answers

In the context of data mining, which type of algorithm is used for predicting a categorical class attribute?

  • Clustering
  • Association rule discovery
  • Classification (correct)
  • Regression

What is the purpose of using a linear regression model in data mining?

  • To classify data into distinct clusters
  • To predict continuous numerical values (correct)
  • To predict categorical outcomes
  • To discover sequential patterns

Which type of regression is closely related to statistics?

  • Clustering regression
  • Logistic regression
  • Linear regression (correct)
  • Association regression

What type of regression model is suitable for predicting binary outcomes?

<p>Logistic regression (C)</p> Signup and view all the answers

Which algorithm type is used for finding relationships between variables without the need for a target variable?

<p>Clustering (C)</p> Signup and view all the answers

If a data mining task involves finding patterns in sequential data, which algorithm type would be most appropriate?

<p>Association rule discovery (C)</p> Signup and view all the answers

What type of algorithm is used for prediction in data mining?

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

In association rule discovery, what does the rule {Milk} --> {Coke} mean?

<p>If Coke is bought, Milk is definitely bought (B)</p> Signup and view all the answers

In the context of association rule discovery, what does support refer to?

<p>The frequency of occurrence of an itemset in the dataset (C)</p> Signup and view all the answers

If s = 60% in mining transactions, what does it imply?

<p>{Bread, Milk, Orange Juice} are frequent itemsets (B)</p> Signup and view all the answers

In association rule discovery, what does the confidence level represent?

<p>The reliability of the discovered rule (D)</p> Signup and view all the answers

What does the rule {Onion, Beer} --> {Garlic} indicate in association rule discovery?

<p>{Garlic} is usually purchased when Onion and Beer are bought together (B)</p> Signup and view all the answers

What type of regression is used when the dependent variable is categorical?

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

Which regression analysis technique is used to understand the relationship between independent variables and dependent variable?

<p>Linear regression model (C)</p> Signup and view all the answers

What is the primary use of regression analysis in data mining?

<p>Predicting continuous variables (C)</p> Signup and view all the answers

Which regression technique is used when the relationship between independent and dependent variables is not linear?

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

What type of regression is used for time series prediction of stock market indices?

<p>Linear regression (B)</p> Signup and view all the answers

Which regression technique is used to predict sales amounts of a new product based on advertising expenditure?

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

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