A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is the sum of the differences in ranks?
A) 128
B) 100
C) 0
D) 1

Question

Quizplus · Accepted Answer

The sum of the differences in ranks is always zero because the differences are calculated by subtracting one rank from another, and when summed, they cancel each other out.

A Study Was Conducted on the Percent of Total Advertising