Best Fit Line

Front

What is a best fit line?

Back

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

Tags

CCSS.8.EE.B.5

Front

How do you determine the best fit line visually?

Back

The best fit line should pass through the center of the data points, balancing the number of points above and below the line.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of a best fit line?

Back

The purpose of a best fit line is to model the relationship between two variables and make predictions based on that relationship.

Tags

CCSS.8.EE.B.5

Front

What does it mean if the best fit line has a positive slope?

Back

A positive slope indicates that as one variable increases, the other variable also tends to increase.

Tags

CCSS.8.EE.B.5

Front

What does it mean if the best fit line has a negative slope?

Back

A negative slope indicates that as one variable increases, the other variable tends to decrease.

Tags

CCSS.8.EE.B.5

Front

What is the correlation coefficient?

Back

The correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables, often represented as 'r'.

Tags

CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive linear relationship between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative linear relationship between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no linear relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the least squares method?

Back

The least squares method is a statistical technique used to determine the best fit line by minimizing the sum of the squares of the vertical distances of the points from the line.