| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 7 |
| Paper | 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 calculations or problem-solving. The application part (c) is trivial identification. This is significantly easier than average A-level questions which typically require applying techniques. |
| Spec | 2.01a Population and sample: terminology2.01b Informal inferences: from samples |
Explain what you understand by
\begin{enumerate}[label=(\alph*)]
\item a population, [1]
\item a statistic. [2]
\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\%.
\begin{enumerate}[label=(\alph*)]
\setcounter{enumi}{2}
\item Identify the population and the statistic in this situation. [2]
\item Explain what you understand by the sampling distribution of this statistic. [2]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q1 [7]}}