Three statements about what you can learn from the correlation coefficient are listed in (a)–(c). Label each statement, choosing from A (can always tell), N (can never tell), or S (can sometimes tell). For each statement you label S for sometimes, explain briefly when you can tell and when you cannot. 

a. Whether there is a relationship between x and y. 

b. Whether the relationship between x and y is linear or curved 

c. Whether there are outliers or influential points