Question

What is the purpose of a linear regression model calculator?

1) To calculate the slope and intercept of a linear regression line
2) To predict future values based on a linear relationship
3) To determine the strength of the relationship between two variables
4) To analyze the residuals and check for assumptions of linear regression

Answer 1

A linear regression model calculator is used to calculate the slope and intercept of a linear regression line, predict future values based on the relationship, determine the strength of the relationship between variables, and analyze residuals and check assumptions of linear regression.

Step-by-step explanation:

A linear regression model calculator is used for multiple purposes:

1. To calculate the slope and intercept of a linear regression line, which represents the relationship between two variables.
2. To predict future values based on this linear relationship.
3. To determine the strength of the relationship between the two variables.
4. To analyze the residuals and check for assumptions of linear regression, such as the fit of the model to the data.