Suppose we record the husband’s age and the wife’s age for many randomly selected couples.
(a) What would it mean about ages of couples if these two variables had a negative relationship?
(b) What would it mean about ages of couples if these two variables had a positive relationship?
(c) Which do you think is more likely, a negative or a positive relationship?
(d) Do you expect a strong or a weak relationship in the data? Why?
(e) Would a strong correlation imply there is an association between husband age and wife age?