Exam style questions - Hodder Plus Home

1 2 4 6 6 6 7
Finally add a key.
6 3 = 63
2 2 3 5 6 7 7
3 1 4 5 6 8 8 9
4 0 0 1 3 5 8
5 2 2 7 9
6 0 3 5
7 1
b 33
c The modal age (age with the highest frequency) is 16.
d The median age is 38.
e The oldest member is 71 and the youngest is 12, so
the range is 71 − 12 = 59.
f There are 14 members aged 40 or more so the
fraction of veterans = 14/33.
Now try these exam questions
1 Mrs Taylor and Mr Ahmed both work for the same company.
In 2010 they each recorded the mileage of every journey they made for the company.
The mileages for Mrs Taylor’s journeys are summarised in the frequency polygon below.
50
Number of journeys
(frequency)
40
30
20
10
0
10 20 30 40 50
Mileage (m miles)
The mileages for Mr Ahmed’s journeys are summarised in this table.
Mileage (m miles) 0 < m 10 10 < m 20 20 < m 30 30 < m 40
Frequency 38 44 10 8
a Draw, on the same grid, the frequency polygon for the mileages of Mr Ahmed’s journeys. [2]
b Make two comparisons between the mileages of Mrs Taylor’s and Mr Ahmed’s journeys. [2]
2 A class of 33 students sat a mathematics exam. Their results are listed below.
89 78 56 43 92 95 24 72 58 65 55
98 81 72 61 44 48 76 82 91 76 81
74 82 99 21 34 79 64 78 81 73 69
a Draw an ordered stem-and-leaf diagram for this information. [3]
b Find the median mark. [1]
3 The table gives information about how much time was spent in a supermarket by 100 shoppers.
Time (t minutes) 0 < t 10 10 < t 20 20 < t 30 30 < t 40 40 < t 50
Number of shoppers 6 21 15 33 25
Draw a frequency diagram to represent this information. [4]
© Hodder Education 2011 Unit A
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