| Exam Board | WJEC |
|---|---|
| Module | Unit 2 (Unit 2) |
| Year | 2024 |
| Session | June |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Non-parametric tests |
| Type | Sampling bias identification |
| Difficulty | Easy -2.0 This is a straightforward statistics question testing basic definitions of population, sampling methods, and sampling bias. It requires only recall of standard terminology (intended population, convenience sampling) and recognition of obvious sampling flaws (time bias, self-selection). No calculations or problem-solving required—purely definitional knowledge at an elementary level. |
| Spec | 2.01a Population and sample: terminology2.01c Sampling techniques: simple random, opportunity, etc2.01d Select/critique sampling: in context |
An exercise gym opens at 6:00 a.m. every day. The manager decides to use a questionnaire to gather the opinions of the gym members. The first 30 members arriving at the gym on a particular morning are asked to complete the questionnaire.
\begin{enumerate}[label=(\alph*)]
\item What is the intended population in this context? [1]
\item What type of sampling is this? [1]
\item How could the sampling process be improved? [1]
\end{enumerate}
\hfill \mbox{\textit{WJEC Unit 2 2024 Q1 [3]}}