Number of Choir Members at Each Level
Worksheet
What is the average number of
choir members at each level?
Some pupils take part in the Inter School Singing Contest every year. Miss Chan
records the number of choir members at each level in the bar chart below.
Can you help her to find the average number of choir members at each level?
The Number of Choir Members at Each Level
28
26
24
22
20
18
Number of 16
14
pupils 12
10
8
6
4
2
0
P.1
P.2
P.3
P.4
P.5
P.6
Level
Complete the following:
1. ________ levels are involved in the study.
2. P. _____ has the most choir members. There are __________ members.
3. P. _____ has the least choir members. There are __________ members.
Education Bureau
Number of Choir Members at Each Level
Worksheet
4. The number of choir members at each level would not be more than
__________ or less than __________ .
It is because ___________________________________________________.
5. I estimate the average number of choir members at each level is
__________ . (Draw a horizontal line to show the average in the chart.)
6. There are __________ members above the line and ___________ members
missing below the line.
7. If the total number of members above the line and the total number of
missing members below the line are the same, then the estimation of the
average number is (correct / incorrect).
8. The average number of choir members at each level is __________ .
Education Bureau