Question: It is well known that similarity in attitudes, beliefs and interests plays an important role in interpersonal attraction (See Byrne, 1971, for example). Thus, correlations for attitudes between married couples should be strong. Suppose a researcher developed a questionnaire that measures how liberal or conservative one’s attitudes are. Low scores indicate that the person has liberal attitudes, whereas high scores indicate conservatism. The following hypothetical data are scores for married couples.

Compute the Pearson correlation for theses data, and determine whether there is a significant correlation between attitudes for husbands and wives. Set α at .05, two tails.