Coco S. A. supplies a range of computer hardware and software to 2000 schools within a large municipal region of Spain. When Coco S. A. won the contract the issue of customer service was considered to be central to the company being successful at the final bidding stage. The company has now requested that its customer service director creates a series of graphical representations of the data to illustrate customer satisfaction with the service. The following data has been collected during the last six months and measures the time to respond to the received complaint (days).

5	24	34	6	61	56	38	32
87	78	34	9	67	4	54	23
56	32	86	12	81	32	52	53
34	45	21	31	42	12	53	21
43	76	62	12	73	3	67	12
78	89	26	10	74	78	23	32
26	21	56	78	91	85	15	12
15	56	45	21	45	26	21	34
28	12	67	23	24	43	25	65
23	8	87	21	78	54	76	79

The customer service director has analysed this data to create a grouped frequency table and plotted the histogram. From this he made a series of observations regarding the time to respond to customer complaints. He now wishes to extend the analysis to use numerical methods to describe this data. Use this data to answer the next series of questions on Coco S.A. What is the range of the time in days for response to customer complaints? Enter your answer rounded to two decimal places.