Question 5 Jse Harvard referencing, to cite sources, wherever possible in this question. a) Briefly discuss the strengths and weaknesses of correlation coefficients along with the basic sentiment as to what correlation coefficients portray. (4 marks) b) Explain the use of spreadsheet software in business and apply this to the work of a financial accountant. (3 marks) c) State how index numbers can be useful along with their main features, complete with at least one example of an index in use. (3 marks) d) Define mean, median, mode and range. Please illustrate what they would be by using a run of 15 different numbers and calculating mean, median, mode and range. (6 marks) e) Choose, draw and label 4 completely different types of data diagram. Please ensure all axes are clearly labelled and the diagram has a title. (4 marks)