The librarian of a school recorded how many books were borrowed from the library on each of the 27 days of an examination month. The results are presented below:
Number of books borrowed (x) | 2 | 3 | 4 | 5 | 6
Frequency (f) | 3 | 7 | 10 | 5 | 2
(i) What is meant by the ‘range’ of a set of observations? Explain in one or two sentences.
(ii) Using the table, identify the lowest and the highest numbers of books borrowed on any single day.
(iii) Find the range of the data. Write one short sentence interpreting what this value tells you about the borrowing pattern during the month.