7. A restaurant owner wants to see if there is a relationship between the amount of sugar in some food items on her menu and how popular the items are.

She creates a scatter plot to show the relationship between amount of sugar in menu

items and the number of orders for those items. The correlation coefficient for the

line of best fit is 0.58.

a. Are the two variables correlated? Explain your reasoning.

b. Does either of the variables cause the other to change? Explain your reasoning.