Relationship between two variables:

Scatterplots A:

In this scatter plot, it is clear that both variables are in same direction. That is, both quantitative variables are increasing or decreasing together and it is approximately linear. Therefore, the relationship is positive linear.

Scatterplot B:

In this scatter plot, there is no any particular pattern and the data are scattered randomly. Here, the direction of two variables cannot be identified. Therefore, the relationship is no relationship.

Scatterplots A:

In this scatter plot, it is clear that both variables are in same direction. That is, both quantitative variables are increasing or decreasing together and it is approximately linear. Therefore, the relationship is positive linear.

Scatterplot B:

In this scatter plot, there is no any particular pattern and the data are scattered randomly. Here, the direction of two variables cannot be identified. Therefore, the relationship is no relationship.