11. Rating Political Candidates A political scientist is studying the relationship between the voter image of a conservative political candidate and the distance (in kilometers) 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 rs.

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

Transcribed Image Text:

Voter Rating Distance 123456 12 75 7 165 5 300 19 15 17 180 12 240 7 9 120 8 18 60 9 3 230 10 8 200 11 15 130 12 4 130