Best Fit Line Review

Front

What is a best fit line?

Back

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

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 points above and below the line.

Front

What is the purpose of a best fit line in data analysis?

Back

The purpose is to identify trends in data, make predictions, and understand relationships between variables.

Front

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

Back

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

Front

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

Back

A negative slope indicates that as one variable increases, the other variable decreases.

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.

Front

What does a correlation coefficient of 1 indicate?

Back

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

Front

What does a correlation coefficient of -1 indicate?

Back

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

Front

What does a correlation coefficient of 0 indicate?

Back

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

Front

What is the method of least squares?

Back

The method of least squares is a mathematical approach used to find the best fit line by minimizing the sum of the squares of the vertical distances of the points from the line.