| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Year | 2002 |
| Session | January |
| Marks | 7 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Central limit theorem |
| Type | Sampling distribution theory |
| Difficulty | Easy -1.8 This is a pure definitional question requiring only recall of basic statistical terminology (population, statistic, sampling distribution) with no calculation or problem-solving. The application in parts (c) and (d) is straightforward identification from a simple context. This is significantly easier than average A-level questions which typically require some calculation or multi-step reasoning. |
| Spec | 2.01a Population and sample: terminology5.01a Permutations and combinations: evaluate probabilities |
\begin{enumerate}
\item Explain what you understand by\\
(a) a population,\\
(b) a statistic.
\end{enumerate}
A questionnaire concerning attitudes to classes in a college was completed by a random sample of 50 students. The students gave the college a mean approval rating of 75\%.\\
(c) Identify the population and the statistic in this situation.\\
(d) Explain what you understand by the sampling distribution of this statistic.\\
\hfill \mbox{\textit{Edexcel S2 2002 Q1 [7]}}