Think about the basic formula of mean.

Use the basic formula to find the mean of this data.

Think about those which we can not be used to represent graphically.

Think about the sum of ages of all members and then find total age of majors.

Think about the methods which we can use to measure the central tendency.

Calculate the total sum of five terms and put it in the formula of mean to calculate the velue of x.

Let us apply the formula and see what happens. Can we use the value of mean to find x now?

Think about the formula of mean which can be used in this question.

Let us apply the formula and see what happens. Can we use the value of mean to find x now?

Think about those which we can not be used to represent graphically.