For each question, give your answer as one of the following: (a) Quiz 1; (b) Quiz 2; (c) Both quizzes

For each question, give your answer as one of the following: (a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.
1. Which quiz has less interquartile range in grade distribution?
2. Which quiz has the greater percentage of students with grades 90 and over?
3. Which quiz has a greater percentage of students with grades less than 60?