| Exam Board | Edexcel |
|---|---|
| Module | AS Paper 2 (AS Paper 2) |
| Year | 2024 |
| Session | June |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Data representation |
| Type | Misinterpretation of data in graphs |
| Difficulty | Easy -1.8 This is a straightforward data interpretation question requiring only recall of the large data set context (prevailing wind direction in UK is southwest, so least frequent is north) and knowledge that 999 is a standard missing data code. No calculations or problem-solving required, just factual recall. |
| Spec | 2.01d Select/critique sampling: in context |
| Direction | \(A\) | \(B\) | \(C\) | \(D\) |
| Frequency | 22 | 48 | 56 | 58 |
| Answer | Marks | Guidance |
|---|---|---|
| Answer | Mark | Guidance |
| East | B1 | For East and a suitable reason based on general winds in UK/Camborne. Allow East and Camborne indicated on a sketch map. Contradictory comment e.g. 'Camborne is in the North, so wind is less likely to come from the East' is B0 |
| Answer | Marks | Guidance |
|---|---|---|
| Answer | Mark | Guidance |
| e.g. 'wind direction should be in the range 0 to 360' | M1 | For giving a reason which correctly uses 360. Allow e.g. 'only goes up to 360', also condone '10 to 360'. This mark may be implied by e.g. 'subtract 720' |
| e.g. 'so he should ignore/remove the value' | A1 | For stating appropriate action to take provided M1 clearly scored. Allow e.g. 'reject', 'discard'. Must be suggesting what to do with the value, not just stating it is an anomaly. Allow change it to 279 |
## Question 2:
**Part (a):**
| Answer | Mark | Guidance |
|--------|------|----------|
| East | B1 | For East **and** a suitable reason based on general winds in UK/Camborne. Allow East and Camborne indicated on a sketch map. Contradictory comment e.g. 'Camborne is in the North, so wind is less likely to come from the East' is B0 |
**Part (b):**
| Answer | Mark | Guidance |
|--------|------|----------|
| e.g. 'wind direction should be in the range 0 to 360' | M1 | For giving a reason which correctly uses 360. Allow e.g. 'only goes up to 360', also condone '10 to 360'. This mark may be implied by e.g. 'subtract 720' |
| e.g. 'so he should ignore/remove the value' | A1 | For stating appropriate action to take provided M1 clearly scored. Allow e.g. 'reject', 'discard'. Must be suggesting what to do with the value, not just stating it is an anomaly. Allow change it to 279 |
---\begin{enumerate}
\item Keith is studying the variable Daily Mean Wind Direction, in degrees, from the large data set.
\end{enumerate}
Keith summarised the data for Camborne from 1987 into 4 directions $A , B , C$ and $D$ representing North, South, East and West in some order.
\begin{center}
\begin{tabular}{ | c | c | c | c | c | }
\hline
Direction & $A$ & $B$ & $C$ & $D$ \\
\hline
Frequency & 22 & 48 & 56 & 58 \\
\hline
\end{tabular}
\end{center}
(a) Using your knowledge of the large data set state, giving a reason, which direction $A$ represents.
The entry for Hurn on 27th September 1987 was 999\\
(b) State, giving a reason, what Keith should do with this value.
\hfill \mbox{\textit{Edexcel AS Paper 2 2024 Q2 [3]}}