The librarian of a school kept a record of the number of library books borrowed by each student during one semester. The data for 120 students are grouped below.
(a) (a) Calculate the mean number of books borrowed per student.
(b) (b) Determine the median number of books borrowed.
(c) (c) If the librarian wishes to order new books based on a ‘typical’ student’s borrowing, should the mean or the median be preferred? Give one reason to support your answer.
(d) Number of Books | Number of Students
0–2 | 18
2–4 | 35
4–6 | 40
6–8 | 20
8–10 | 7