A survey of a class recorded how many books each of 15 students read during the holidays. The information was presented in a bar chart whose bar heights are given below:
Number of books : Number of students
1 : 2
2 : 3
3 : 4
4 : 3
5 : 2
6 : 1
(i) From the bar chart identify the minimum and maximum number of books read by any student.
(ii) Calculate the range of the distribution.
(iii) Later, one more student reported that she had read 8 books. Determine the new range and state how it compares with the original range.