CALCULATING THE MEAN FROM A FREQUENCY TABLE
Work out the mean for each of these frequency tables, you may not use calculator.
Problem 1 :
Solution :
From the table, we understand that,
- at the age of 5 we have 2 people
- at the age of 6 we have 2 people
- at the age of 7 we have 5 people
- at the age of 8 we have 1 people
To find the total number of people, we will add 2, 2, 5 and 1.
Problem 2 :
Solution :
From the table, we understand that,
- 1 person is having no phone (0 phones)
- 3 persons is having 1phone.
- 2 persons is having 2 phones.
- No person is having 3 phones.
- 4 persons is having 4 phones.
- No person is having 5 phones.
Problem 3 :
Solution :
Problem 4 :
Solution :
Problem 5 :
Solution :