A computer operator transfers an hourly wage list from a paper copy to her computer. The data transferred is given below: 5.50 6.10 7.80 6.10 9.20 91.00 11.30 a Find the mean, mode and median of these data. The office manager looks at the figures and decides that something must be wrong. b Write down, with a reason, the mistake that has probably been made.

AppendixLO1