Linear Regression Model Selection Quiz
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Questions and Answers

What does a linear regression model assume about the relationship between input and output?

  • Logarithmic relationship
  • No relationship
  • Exponential relationship
  • Linear relationship (correct)
  • In the context of linear regression, what does 'm' represent in the equation y = mx + b?

  • Intercept
  • Output
  • Slope (correct)
  • Feature
  • Which term is used to refer to the input variable in a linear regression model?

  • Parameter
  • Target
  • Bias
  • Feature (correct)
  • What is the purpose of Mean Squared Error (MSE) in evaluating models?

    <p>Minimize loss</p> Signup and view all the answers

    Which term is used to describe the weights and biases in a linear regression model?

    <p>Parameters</p> Signup and view all the answers

    When comparing two models using MSE, which model is better if Model 1 has MSE = 0.825 and Model 2 has MSE = 3.25?

    <p>Model 1</p> Signup and view all the answers

    In linear regression, what is the role of the loss function?

    <p>To evaluate the accuracy of the model</p> Signup and view all the answers

    Why does the loss function in linear regression not reach zero?

    <p>Inherent noise in the data</p> Signup and view all the answers

    What do parameters represent in linear regression models?

    <p>The coefficients of the model</p> Signup and view all the answers

    How does the functional form of a linear regression model differ from other machine learning models?

    <p>It is a linear relationship between input and output</p> Signup and view all the answers

    What is the objective when solving a linear regression problem?

    <p>Minimize the error between predicted and actual values</p> Signup and view all the answers

    Why is gradient descent often used to solve the parameter optimization problem in linear regression?

    <p>To find optimal parameter values that minimize the loss</p> Signup and view all the answers

    What is the purpose of a loss function in a model?

    <p>To evaluate the model's performance</p> Signup and view all the answers

    In the context of linear regression, what does MSE stand for?

    <p>Mean Squared Error</p> Signup and view all the answers

    What does a lower MSE value indicate about a model's predictions?

    <p>The model has better output predictions on average</p> Signup and view all the answers

    How does the number of examples in the training set (m) relate to the loss function?

    <p>It impacts how the loss function evaluates the model's performance</p> Signup and view all the answers

    What is the main objective when minimizing a loss function in linear regression?

    <p>To reduce errors in predicting output values</p> Signup and view all the answers

    In linear regression, what is the relationship between the model and the loss function?

    <p>The loss is a measure of how well the model is performing</p> Signup and view all the answers

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