Linear Regression

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 a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the line of best fit?

Back

A straight line that best represents the data on a scatter plot, minimizing the distance between the line and all data points.

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you interpret the slope in a linear regression equation?

Back

The slope indicates the change in the dependent variable for each one-unit change in the independent variable.

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 is a scatter plot?

Back

A graph that displays values for typically two variables for a set of data, showing the relationship between them.

Front

How can you use a trend line in a scatter plot?

Back

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

Front

What is the purpose of making predictions using linear regression?

Back

To estimate the value of the dependent variable based on known values of the independent variable.