Linear Regression
(การถดถอยเชิงเส้น)
Definition
Linear Regression (การถดถอยเชิงเส้น) Hard Skill
Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.
Expertise Level
Level 1
Basic
1. Understands the concept of dependent and independent variables.
2. Can interpret a simple linear regression equation.
3. Able to create and interpret a scatter plot with a fitted regression line.
Level 2
Intermediate
1. Can perform linear regression analysis using software tools.
2. Understands assumptions underlying linear regression models.
3. Able to interpret coefficients and evaluate model fit using metrics such as R-squared.
Level 3
Advanced
1. Can apply multiple linear regression and handle multicollinearity issues.
2. Able to diagnose model violations and perform model improvements.
3. Uses linear regression insights to support advanced predictive modeling and decision-making.
