Rating Political Candidates A political scientist wished to examine the relationship...

Rating Political Candidates A political scientist wished to examine the relationship between the voter image of a conservative political candidate and the distance (in miles) between the residences of the voter and the candidate. Each of 12 voters rated the candidate on a scale of 1–20.

a. Calculate Spearman’s rank correlation coefficient .

b. Do these data provide sufficient evidence to indicate a negative correlation between rating and distance?