| Exam Board | AQA |
|---|---|
| Module | AS Paper 2 (AS Paper 2) |
| Year | 2021 |
| Session | June |
| Marks | 1 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Combinations & Selection |
| Type | Describing or comparing sampling methods |
| Difficulty | Easy -1.8 This is a straightforward pattern recognition question requiring students to observe that the years are evenly spaced (50 years apart: 1768, 1818, 1868, 1918, 1968, 2018) and identify this as systematic sampling. It requires only basic recall of sampling method definitions with no calculation or problem-solving. |
| Spec | 2.01c Sampling techniques: simple random, opportunity, etc |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| 1768 | 109.2 | 129.1 | 12.8 | 85.6 | 46.1 | 148.7 | 121.9 | 91.6 | 136.8 | 119.4 | 142.5 | 103.6 |
| 1818 | 98.0 | 65.8 | 134.7 | 135.6 | 55.9 | 31.2 | 50.4 | 21.0 | 115.6 | 75.8 | 112.0 | 46.8 |
| 1868 | 99.9 | 62.2 | 71.1 | 61.4 | 36.7 | 16.5 | 20.0 | 106.7 | 90.2 | 95.6 | 61.4 | 185.6 |
| 1918 | 91.2 | 61.6 | 36.7 | 63.3 | 58.5 | 30.9 | 110.0 | 62.9 | 189.5 | 69.1 | 66.3 | 122.5 |
| 1968 | 85.8 | 47.6 | 59.5 | 68.8 | 78.7 | 94.0 | 107.8 | 72.2 | 148.1 | 99.0 | 69.6 | 84.2 |
| 2018 | 104.5 | 52.8 | 115.1 | 91.4 | 51.9 | 16.5 | 39.6 | 76.7 | 67.0 | 75.8 | 104.9 | 116.0 |
| Answer | Marks | Guidance |
|---|---|---|
| Answer/Working | Marks | Guidance |
| Systematic | B1 (2.2b) | Circles correct answer |
## Question 12:
| Answer/Working | Marks | Guidance |
|---|---|---|
| Systematic | B1 (2.2b) | Circles correct answer |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.
\begin{center}
\begin{tabular}{|l|l|l|l|l|l|l|l|l|l|l|l|l|}
\hline
& Jan & Feb & Mar & Apr & May & Jun & Jul & Aug & Sep & Oct & Nov & Dec \\
\hline
1768 & 109.2 & 129.1 & 12.8 & 85.6 & 46.1 & 148.7 & 121.9 & 91.6 & 136.8 & 119.4 & 142.5 & 103.6 \\
\hline
1818 & 98.0 & 65.8 & 134.7 & 135.6 & 55.9 & 31.2 & 50.4 & 21.0 & 115.6 & 75.8 & 112.0 & 46.8 \\
\hline
1868 & 99.9 & 62.2 & 71.1 & 61.4 & 36.7 & 16.5 & 20.0 & 106.7 & 90.2 & 95.6 & 61.4 & 185.6 \\
\hline
1918 & 91.2 & 61.6 & 36.7 & 63.3 & 58.5 & 30.9 & 110.0 & 62.9 & 189.5 & 69.1 & 66.3 & 122.5 \\
\hline
1968 & 85.8 & 47.6 & 59.5 & 68.8 & 78.7 & 94.0 & 107.8 & 72.2 & 148.1 & 99.0 & 69.6 & 84.2 \\
\hline
2018 & 104.5 & 52.8 & 115.1 & 91.4 & 51.9 & 16.5 & 39.6 & 76.7 & 67.0 & 75.8 & 104.9 & 116.0 \\
\hline
\end{tabular}
\end{center}
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
\hfill \mbox{\textit{AQA AS Paper 2 2021 Q12 [1]}}