do it on paper and show all workings and explain them.

(b) The number of credits completed by a sample of 53 IS students is shown below: 9991212121218181819202730303335353739394243434547 50 50 52 53 56 57 57 57 60 64 65 66 70 72 73 76 76 8084 90 92103106 109109120120 Use the information to respond to the following questions: (i) We want to create a frequency distribution with five classes. Determine the class width to be used as well as the frequency corresponding to each class. (ii) Construct a relative frequency distribution for this data. (iii) Construct a cumulative frequency distribution for this data. (iv) Construct a frequency polygon for this data. Use your answer book for this purpose. [2+2+2+4 marks]