The mean of 5 numbers is 27. If one of the numbers is excluded, the mean reduces by 2. Determine the excluded number. The mean of 6 numbers is AppendixLO1 50. If one of the numbers is excluded, the mean reduces by 5. Determine the excluded number. The average mark for a class of 40 students is 74. The 15 male students in the class have an average mark of 70. Calculate the average mark of the female students in the class. The average monthly salary of 50 people is $4200. The average monthly salary of 42 of them is $3500. Calculate the average monthly salary of the remaining 8 people.

AppendixLO1