When should I use linear regression?

When should I use linear regression?

You should use linear regression when you want to model the relationship between a dependent variable and one or more independent variables.

What kind of data do I need for linear regression?

You need continuous numerical data for the dependent variable and can use continuous or categorical data for independent variables.

Are there any assumptions I need to check before using it?

Yes, you should check for linearity, independence, homoscedasticity, and normality of residuals.

Can linear regression be used for non-linear relationships?

Linear regression is not suitable for non-linear relationships unless you transform the data or use polynomial regression.