1. Over a fifteen-year period, the average final exam mark for QM1 students are listed below:

1. 62 1997 65 2002 82
2. 69 1998 76 2003 66
3. 53 1999 62 2004 59
4. 73 2000 55 2005 75
5. 68 2001 79 2006 64

1. Using a lower limit of 50 and with a class width of 5 create a frequency distribution showing the average final exam marks. (3 marks