**QUESTION:** Below are some scatter graphs. State whether they show positive, negative, or no correlation. If there is correlation, state the strength of it.

**ANSWER:**

a) We can see that these points following a straight-line pattern fairly closely, and we can see that as the x value increases, so does the y value. Therefore, this graph displays **moderate positive correlation**.

b) There appears to be no relationship followed by the points on this graph. Therefore, it displays **no correlation**.

c) We can see that these points following a straight-line pattern very closely, and we can see that as the x value increases, the y value decreases. Therefore, this graph displays **strong negative correlation**.