Linear Regression Review

Front

What is linear regression?

Back

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.

Front

What does the slope of a line in linear regression represent?

Back

The rate of change of the dependent variable for each unit change in the independent variable.

Front

What is the purpose of the line of best fit?

Back

To make predictions about the dependent variable based on the values of the independent variable.

Front

How do you interpret a positive slope in a linear regression model?

Back

As the independent variable increases, the dependent variable also increases.

Front

How do you interpret a negative slope in a linear regression model?

Back

As the independent variable increases, the dependent variable decreases.

Front

What is the y-intercept in a linear regression equation?

Back

The value of the dependent variable when the independent variable is zero.

Front

What does the equation y = mx + b represent?

Back

The equation of a straight line, where m is the slope and b is the y-intercept.

Front

What is the correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables.

Front

What does a correlation coefficient of 1 indicate?

Back

A perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative linear relationship between two variables.