| Exam Board | Edexcel |
|---|---|
| Module | S1 (Statistics 1) |
| Year | 2006 |
| Session | January |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Modelling and Hypothesis Testing |
| Type | Statistical modeling theory |
| Difficulty | Easy -1.8 This is a straightforward recall question from S1 requiring only memorization of basic statistical concepts with no calculation, problem-solving, or application. Students simply need to state reasons for modeling and give standard textbook examples of distributions, making it significantly easier than average A-level questions. |
| Spec | 2.04a Discrete probability distributions2.04e Normal distribution: as model N(mu, sigma^2)5.02e Discrete uniform distribution |
| Answer | Marks | Guidance |
|---|---|---|
| To simplify a real world problem; to improve understanding/describe/analyse a real world problem; quicker and cheaper than using real thing; to predict possible future outcomes; refine model/change parameters possible | B1B1 | Any 2 (2) |
| Answer | Marks | Guidance |
|---|---|---|
| (i) e.g. height, weight (ii) score on a face after tossing a fair die | B1B1 | (2) |
# Question 5:
## Part (a)
| To simplify a real world problem; to improve understanding/describe/analyse a real world problem; quicker and cheaper than using real thing; to predict possible future outcomes; refine model/change parameters possible | B1B1 | Any 2 (2) |
## Part (b)
| (i) e.g. height, weight (ii) score on a face after tossing a fair die | B1B1 | (2) |
---5. (a) Write down two reasons for using statistical models.\\
(b) Give an example of a random variable that could be modelled by
\begin{enumerate}[label=(\roman*)]
\item a normal distribution,
\item a discrete uniform distribution.
\end{enumerate}
\hfill \mbox{\textit{Edexcel S1 2006 Q5 [4]}}