Problem : The mean of {4, 2, -19, 13, 17, 5x - 15} is 7 . What is x ?

Problem : The mean of a set of 10 numbers is 67 . If the values 99 and 67 are removed from the set, what is the new mean?
Hint: Find the total of the 10 original numbers.

Problem : The median of {52, 10, 3, -6, 25, 6x} is 14 . What is x ?

Problem : The median of {9, 12, 16, -3, 5x + 2} is 12 . What are the possible values of x ? Write your answer as an inequality.

Problem : The mode of {4, 5, 1, 4, 4, 9, 5, x} is 4. What are the possible values of x ? Write your answer as an inequality.

Problem : Bill picks 5 whole numbers. Four of them are {2, 4, 7, 2} . The range of his numbers is 5 . The median of his numbers is 4 . The mode of his numbers is 2 . The mean of his numbers is not equal to 4.2 . What is the fifth number?