The quiz that Carol's 3 best friends took that has a greater variability of success is the science quiz.
What quiz has the greater variability of success?
In order to determine which quiz has the greater variability of success, the range of the scores have to be determined. The quiz with the higher range has the greater variability of success.
Range is the difference between the highest and lowest values of a set of observations
Range = highest value - lowest value
Range of the spelling quiz = 7 - 2 = 5
Range of the science quiz = 9 - 3 = 6
To learn more about range, please check: https://brainly.com/question/12372689
