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| Questions/instructions: | |||||||||||||||
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%
responses
2001 ('97) |
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|
y4
|
y8
|
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| 1.
In a bag of marbles, 1/2 are red, 1/4
are blue, 1/6 are green, and 1/12
are yellow. If a marble is taken from the bag without looking, it is most
likely to be: |
A
|
red |
 |
33
(•)
|
71
(76)
|
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B
|
blue | ||||||||||||||
|
C
|
green | ||||||||||||||
|
D
|
yellow | ||||||||||||||
| 2.
Here are the ages of five children: 13, 8, 6, 4, 4. What is the average (mean) age of these children? |
|
•
|
34
(33)
|
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| 3.
Maria made a survey of the students in her class. She found that 60% of
the students know how to use one brand of computer, and 40% knew how to
use a different brand of computer. She said that because it added up to
100%, it meant that everybody in the class knew how to use a computer.
Explain to Maria why she is right or wrong. If possible, use a diagram. |
Clear
explanation that Maria is wrong:
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|
with
diagram
|
•
|
1
(2)
|
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|
without
diagram
|
•
|
1
(2)
|
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| Commentary Item 3 was very difficult for the year 8 students. The 2001 results for year 8 students were very similar to the1997 results. |
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