The table shows the marks of 250 pre-university students in an examination: Mark 0-9 No. of Student 15 10-19 20 20-29 25 30-39 24 40-49 12 50-59 31 60-69 71 70-79 52 Calculate the (i) Plot histogram based on relative frequency of marks (5 marks) (ii) First quartile and third quartile, (6 marks) (iii) Median, (4 marks) (iv) Discuss the advantage and disadvantages of mean, median and standard deviation with citation (9 marks) (v) Discuss the THREE difference between grouped and ungrouped data (6 marks) (Total 30 marks)