Describing or comparing sampling methods

8 A random sample of 200 is taken from the adult population of a town and classified by age-group and preferred type of car. The results are given in the following table. Test, at the \(5 \%\) significance level, whether preferred type of car is independent of age-group.

17
25
31
15
11
46
17
27
-
15
47
E
32
F
35
G
-
} &
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\hline 6.

20
22
24
26
28
30
32
34
36
38
}} &
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\hline \hline & 1 & I & I & । & I & I & I & I & I & I & I & I & I & I & I & I & I & I & 1 &
\hline & 1 & I & I & I & 1 & 1 & & I & I & I & I & I & 1 & I & I & I & I & 1 & । &
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\hline 7. \section*{Diagram 1}

11 A survey is undertaken to find out the most popular political party in London.
The first 1100 available people from London are surveyed.
Identify the name of this type of sampling.
Circle your answer.
simple random
opportunity
stratified
quota

12 The table below shows the total monthly rainfall (in mm ) in England and Wales in a sample of six years. The sample of six years was taken from a data set covering every year from 1768 to 2018. Deduce the sampling method most likely to have been used to collect this sample. Circle your answer.
[0pt] [1 mark] Opportunity
Simple Random
Stratified
Systematic

12 Shelly organised an activity weekend for 15 groups of 10 people.
She decided to collect a sample to obtain feedback about the weekend.
To collect the sample Shelly selected two groups at random and then interviewed each member of these two groups. State the name of this sampling method.
Circle your answer.
[0pt] [1 mark] Cluster
Opportunity
Stratified
Systematic \includegraphics[max width=\textwidth, alt={}, center]{11168e8f-5ba5-4d27-83ab-0327cc23d08c-15_2488_1716_219_153}