Facebook accounts
Interpret a two-way table
Every student at Berriwa High School was surveyed. The results are shown in the table below.
Over 16 |
Not over 16 |
|
Has a Facebook account |
57 |
53 |
No Facebook account |
43 |
62 |
Using the two-way table above, answer the following questions.
-
How many students 16 years or younger at Berriwa High School have a Facebook account?
-
What is the total number of students who are over 16 at Berriwa High School?
-
What is the total number of students who do not have a Facebook account?
-
How many students go to Berriwa High School?
-
‘16 years or younger’ means the same as ‘not over 16’.
There are 53 students at Berriwa High School who are 16 years or younger and have a Facebook account. -
57 + 43 = 100
There are 100 students who are over 16 at Berriwa High School. -
43 + 62 = 105
105 students at Berriwa High School do not have a Facebook account. -
Every student at Berriwa High School is included in exactly one of the four numbers in the table:
57 + 53 + 43 + 62 = 215
There are 215 students at Berriwa High School.