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

a. Calculate Spearman's rank correlation coefficient rs.

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

Transcribed Image Text:

Voter Rating Distance 1 12 75 2345678 7 165 5 300 19 15 17 180 12 240 9 120 18 60 9 3 230 10 8 200 11 15 130 12 4 130