3.

Adults responding to a survey are asked to choose their age group from these: 1825, 2540, 4060, over 60. What is wrong with this choice? 

[ ] 
No ages below 18 
[ ] 
Age group intervals are all different 
[ ] 
Intervals overlap 
[ ] 
'Over 60' is too vague 


4.

Which of these can be read from a grouped frequency table of children's heights (h cm) recorded in 10cm intervals? 

[ ] 
Heights of individual children 
[ ] 
The height range 
[ ] 
The median height 
[ ] 
The modal height interval 


5.

The frequency recorded in the interval 130 < h ≤ 140 is 5. This means that five children are ....... 

[ ] 
at least 130cm tall 
[ ] 
less than 140cm tall 
[ ] 
135cm tall 
[ ] 
over 130cm and up to 140cm tall 


6.

Which of these intervals would include a height of 130cm? 

[ ] 
125 ≤ h < 130 
[ ] 
130 < h ≤ 140 
[ ] 
120 < h ≤ 130 
[ ] 
h >130 


7.

The contents of seed packets are recorded to the nearest 10. A pack with 43 seeds is recorded as having ....... 

[ ] 
30 seeds 
[ ] 
35 seeds 
[ ] 
40 seeds 
[ ] 
45 seeds 


8.

A packet of 50 seeds (to the nearest 10) will contain at least ....... 

[ ] 
44 seeds 
[ ] 
45 seeds 
[ ] 
54 seeds 
[ ] 
55 seeds 


9.

The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the total number of seeds in these packs? 

[ ] 
630 
[ ] 
750 
[ ] 
820 
[ ] 
940 


10.

The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the mean (average) contents of these seed packets? 

[ ] 
41 
[ ] 
42 
[ ] 
43 
[ ] 
44 

