| Exam Board | Edexcel |
|---|---|
| Module | S3 (Statistics 3) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Topic | Permutations & Arrangements |
| Type | Linear programming and optimization |
| Difficulty | Easy -2.0 This is a straightforward sampling question requiring only recall of stratified sampling definition and basic proportional allocation. No calculations beyond simple percentages (10% of each stratum), no problem-solving or novel insight required—purely textbook application of a standard technique. |
| Spec | 2.01c Sampling techniques: simple random, opportunity, etc |
A hotel has 160 rooms of which 20 are classified as De-luxe, 40 Premier and 100 as Standard. The manager wants to obtain information about room usage in the hotel by taking a 10\% sample of the rooms.
\begin{enumerate}[label=(\alph*)]
\item Suggest a suitable sampling method. [1]
\item Explain in detail how the manager should obtain the sample. [4]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S3 Q1 [5]}}