Question 1
All the students in a school were asked what their favourite colour was.
The results are displayed in the bar chart below.
How many students where in the school?
Select the correct answer from the list below:
A: 135
B: 90
C: 105
D: 120
CORRECT ANSWER: A: 135
WORKED SOLUTION:
The total number of students,
40+20+35+15+25=135
Level 3
Question 2
All the students in a school were asked what their favourite colour was.
The results are displayed in the bar chart below.
How many more people chose pink compared to orange.
Select the correct answer from the list below:
A: 10
B: 15
C: 25
D: 5
CORRECT ANSWER: D: 5
WORKED SOLUTION:
25-20=5 more people
Level 3
Question 3
People were surveyed on how many hours they exercise a week.
The results are displayed in the bar chart below.
What is the modal number of hours exercising per week?
Select the correct answer from the list below:
A: 0
B: 1
C: 2
D: 3
CORRECT ANSWER: C: 2
WORKED SOLUTION:
Select the most common time for exercise.
Level 3
Question 4
People were surveyed on how many hours they exercise a week.
The results are displayed in the bar chart below.
Find the median number of hours exercised per week.
Select the correct answer from the list below:
A: 1 hours
B: 1.5 hours
C: 2 hours
D: 3 hours
CORRECT ANSWER:
WORKED SOLUTION:
16 + 11+18+8+6=59The median leagth of time the people exercise for is between the 29 th and 30 th person.
This person lies within the 2 hour group.
Level 3
Question 5
People were surveyed on how many hours they exercise a week.
The results are displayed in the bar chart below.
Find the mean number of hours exercised per week.
Select the correct answer from the list below:
A: 1.87 hours
B: 1.54 hours
C: 1.14 hours
D: 2.03 hours
CORRECT ANSWER: B: 1.54 hours
WORKED SOLUTION:
16\times 0 +11\times 1 +16\times 2 +8\times 3 +6\times 4 = 9191\div 59=1.54 hours
Level 3