| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Topic | Measures of Location and Spread |
| Type | Sampling frames and populations |
| Difficulty | Easy -2.0 This is a straightforward recall question on basic sampling terminology and concepts from S2. It requires only definitions and simple understanding of sampling methods with no calculations, problem-solving, or statistical techniques—significantly easier than typical A-level questions which involve applying methods or multi-step reasoning. |
| Spec | 2.01a Population and sample: terminology2.01c Sampling techniques: simple random, opportunity, etc2.01d Select/critique sampling: in context |
A large dental practice wishes to investigate the level of satisfaction of its patients.
\begin{enumerate}[label=(\alph*)]
\item Suggest a suitable sampling frame for the investigation. [1]
\item Identify the sampling units. [1]
\item State one advantage and one disadvantage of using a sample survey rather than a census. [2]
\item Suggest a problem that might arise with the sampling frame when selecting patients. [1]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q1 [5]}}