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Questions and Answers
Which of the following is not a characteristic of linear regression?
Which of the following is not a characteristic of linear regression?
- It fits a line to data points to make predictions
- It uses maximum likelihood to find the best-fitting line (correct)
- It models a continuous outcome variable
- It calculates R-squared as a measure of goodness-of-fit
What is the primary difference between linear regression and logistic regression?
What is the primary difference between linear regression and logistic regression?
- Linear regression fits a line to data points, while logistic regression fits an S-shaped curve (correct)
- Linear regression models continuous outcomes, while logistic regression models binary outcomes
- Linear regression uses multiple predictors, while logistic regression uses only one predictor
- Linear regression can handle both continuous and discrete predictors, while logistic regression can only handle continuous predictors
Which of the following statements about logistic regression is false?
Which of the following statements about logistic regression is false?
- It is used for binary classification tasks
- It can handle both continuous and discrete predictors
- It calculates R-squared as a measure of goodness-of-fit (correct)
- It models the probability of an outcome occurring
In the context of regression, what is the purpose of using multiple predictors?
In the context of regression, what is the purpose of using multiple predictors?
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Which of the following types of data can be used as predictors in both linear and logistic regression?
Which of the following types of data can be used as predictors in both linear and logistic regression?
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Study Notes
- Linear regression is discussed as a traditional statistical technique where a line is fitted to data points to make predictions.
- Multiple regression involves using multiple predictors (e.g., weight and blood volume) to model an outcome (e.g., size).
- Discrete measurements like genotypes can also be used in regression to predict outcomes.
- Logistic regression is similar to linear regression but is used for binary classification tasks (e.g., predicting if a mouse is obese or not).
- Logistic regression fits an S-shaped curve to data points to predict probabilities.
- Variables like weight, genotype, and age can be used in logistic regression to predict outcomes like obesity.
- Logistic regression does not calculate R-squared like linear regression; instead, it uses maximum likelihood to find the best-fitting curve.
- Logistic regression is popular in machine learning for its ability to handle both continuous and discrete data for classification tasks.
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Description
Explore the differences between linear regression, multiple regression, and logistic regression. Learn how each technique is used for prediction and classification tasks using different types of data variables.
