1. Weekly overtime hours by 15 randomly selected custodial staff at State College for the last week of August was:

0 15 20 2123 25 28 30 3637 37 4045 50 73

Find:

1. The average overtime hours worked for a custodial person. (3 marks)

1. The median of the overtime hours worked. (3 marks)

1. The standard deviation of the overtime hours worked. (4 marks)

1. Based on the results of a and b comment on which measurement you feel would be most useful for measuring central tendency for the custodial staff at State College. (3 marks)