Question 9 The test scores of the students in four classes are summarized below. Answer the questions about them. Class A: The range of scores is and the mean score is . Class B: The range of scores is and the mean score is . Class C: The range of scores is and the mean score is . Class D: The range of scores is and the mean score is . (a) Based on the information above, which class's scores have the most variability? Class A Class B Class C Class D (b) Based on the information above, which class has the lowest scores on average? Class A Class B Class C Class D Clears your work.