Scatter Plots and Line of Fit

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional grid.

Front

What does it mean if a scatter plot has no association?

Back

It means that the ordered pairs in the scatter plot have no predictable pattern.

Front

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

Back

A trend line can be used to predict values based on the relationship shown in the scatter plot.

Front

What is a linear relationship in a scatter plot?

Back

A linear relationship is when the data points in the scatter plot form a straight line, indicating a consistent rate of change.

Front

What does a positive linear association look like in a scatter plot?

Back

In a positive linear association, as one variable increases, the other variable also increases, forming an upward slope.

Front

What does a negative association look like in a scatter plot?

Back

In a negative association, as one variable increases, the other variable decreases, forming a downward slope.

Front

What is a nonlinear association?

Back

A nonlinear association occurs when the relationship between the variables does not form a straight line, indicating a more complex relationship.

Front

What is a correlation coefficient?

Back

A correlation coefficient is a numerical measure that describes the strength and direction of a relationship between two variables.

Front

What does a correlation coefficient close to -1 indicate?

Back

It indicates a strong negative linear relationship between the two variables.

Front

What does a correlation coefficient close to 1 indicate?

Back

It indicates a strong positive linear relationship between the two variables.