1. Some children were playing
bowling on their wii. They wanted to
know the most common number of pins to be knocked over after the first
bowl. Here are the results they
collected:
Go 1
|
7
|
Go 21
|
5
|
Go 2
|
4
|
Go 22
|
6
|
Go 3
|
0
|
Go 23
|
6
|
Go 4
|
5
|
Go 24
|
9
|
Go 5
|
6
|
Go 25
|
7
|
Go 6
|
9
|
Go 26
|
5
|
Go 7
|
8
|
Go 27
|
9
|
Go 8
|
7
|
Go 28
|
10
|
Go 9
|
7
|
Go 29
|
1
|
Go 10
|
10
|
Go 30
|
8
|
Go 11
|
6
|
Go 31
|
4
|
Go 12
|
10
|
Go 32
|
7
|
Go 13
|
10
|
Go 33
|
6
|
Go 14
|
8
|
Go 34
|
7
|
Go 15
|
7
|
Go 35
|
7
|
Go 16
|
3
|
Go 36
|
8
|
Go 17
|
0
|
Go 37
|
6
|
Go 18
|
7
|
Go 38
|
4
|
Go 19
|
10
|
Go 39
|
9
|
Go 20
|
8
|
Go 40
|
8
|
What is the mode of the data?
What is the median of the data?
What is the mean (average) of the data?
2. These
are the marks from a spelling test.
Jay 16
Karen 13
Dominic 18
Tariq 13
Lara 12
Oliver 14
Gemma 19
What is the median
number of marks?
1 mark
3. This
table shows the weight of some fruits and vegetables.
Complete the table.
2 marks
4. Here
is a bar chart showing rainfall.
Kim draws a dotted
line on the bar chart.
She says,
‘The dotted line on
the chart shows the mean rainfall for the four months.’
Use the chart to
explain why Kim cannot be correct.
1 mark
What is the mean
rainfall for the four months?
1 mark
5. Rob
runs 100 metres ten times.
These are his times in seconds.
These are his times in seconds.
What is his mean (average) time?
1 mark
6. Write
a different number in each of these boxes so that the mean of
the three numbers is 9.
1 mark
Write a number in each
of these boxes so that the mode of the five numbers is 11.
1 mark
7. Vicki
puts 10 books on a shelf.
The 10 books
take up 28 centimetres.
What is the mean
(average) thickness of her books?
2 marks
The shelf is 120
centimetres long.
Vicki fills the shelf
with a mixture of books like the first ten books.
Estimate how many
books she can get on the 120 cm shelf.
2 marks
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