## 100 Best Logistic Regression Videos Notes:

Logistic regression is a type of statistical modeling method that is used to predict the likelihood of an event occurring, based on a set of independent variables. In logistic regression, the dependent variable is binary (i.e. it can only take two values, such as 0 or 1, yes or no, true or false).

Logistic regression is a powerful and widely used tool in the field of machine learning and data analysis. Some of the key features and characteristics of logistic regression include:

• Linear relationship: In logistic regression, the relationship between the dependent and independent variables is assumed to be linear. This means that the effect of a change in the independent variable on the dependent variable can be modeled as a straight line.
• Sigmoid curve: The relationship between the dependent and independent variables in logistic regression is non-linear, and it is typically modeled using a sigmoid curve. This curve has an “S” shape, with a steep slope in the middle and a flatter slope at the ends.
• Probabilistic output: The output of a logistic regression model is a probability, which represents the likelihood that the dependent variable will take a particular value. For example, if the dependent variable is binary (i.e. it can only take two values), the output of the logistic regression model will be a probability that the dependent variable will take the value of 1 (as opposed to the value of 0).
• Regularization: Logistic regression models often include a regularization term, which is a penalty applied to the model to reduce the complexity of the model and prevent overfitting. The regularization term can help to improve the generalizability and robustness of the logistic regression model.

Overall, logistic regression is a statistical modeling method that is used to predict the likelihood of an event occurring, based on a set of independent variables. Logistic regression models are powerful and widely used in machine learning and data analysis, and they are characterized by a linear relationship between the dependent and independent variables, a sigmoid curve, probabilistic output, and regularization.