| Exam Board | Edexcel |
|---|---|
| Module | AS Paper 2 (AS Paper 2) |
| Year | 2022 |
| Session | June |
| Marks | 2 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Data representation |
| Type | Misinterpretation of data in graphs |
| Difficulty | Easy -1.8 This question requires only basic knowledge that atmospheric pressure is typically around 1000-1020 hPa and understanding of box plots. No calculations or statistical techniques are needed—just sensible estimation based on real-world context. It's explicitly stated that memorization isn't required, making this easier than routine A-level statistics questions. |
| Spec | 2.01a Population and sample: terminology2.02f Measures of average and spread |
| Answer | Marks | Guidance |
|---|---|---|
| 4(a) Accept 990 to 1030 inclusive | B1 | AO 1.1b |
| 4(b) Any range between 10 and 50 inclusive | B1 | AO 1.1b |
| Answer | Marks | Guidance |
|---|---|---|
| (a) B1 (Median pressures usually around 1000–1020) | [LDS mark] | |
| (b) B1 Any answer in this range. Allow answers in the form \(a \sim b\) where \( | b - a | \) is between 10 and 50. Also allow the case where both \(a\) and \(b\) are in [10, 50] |
**4(a)** Accept 990 to 1030 inclusive | B1 | AO 1.1b
**4(b)** Any range between 10 and 50 inclusive | B1 | AO 1.1b
**Total: 2 marks**
**Notes:**
**(a)** B1 (Median pressures usually around 1000–1020) | [LDS mark]
**(b)** B1 Any answer in this range. Allow answers in the form $a \sim b$ where $|b - a|$ is between 10 and 50. Also allow the case where **both** $a$ and $b$ are in [10, 50] | [LDS mark]
---\begin{enumerate}
\item Jiang is studying the variable Daily Mean Pressure from the large data set.
\end{enumerate}
He drew the following box and whisker plot for these data for one of the months for one location using a linear scale but
\begin{itemize}
\item he failed to label all the values on the scale
\item he gave an incorrect value for the median\\
\includegraphics[max width=\textwidth, alt={}, center]{08e3b0b0-2155-4b37-83e3-343c317ca10c-09_248_1264_573_402}
\end{itemize}
Daily Mean Pressure (hPa)\\
Using your knowledge of the large data set, suggest a suitable value for\\
(a) the median,\\
(b) the range.\\
(You are not expected to have memorised values from the large data set. The question is simply looking for sensible answers.)
\begin{center}
\end{center}
\begin{enumerate}
\item Jiang is studying the variable Daily Mean Pressure from the large data set.
\end{enumerate}
He drew the following box and whisker plot for these data for one of the months for one nong asing at
\begin{itemize}
\item he gave an incorrect value for the median "
\end{itemize}
Using your knowledge of the large data set, suggest a suitable value for\\
(a) the median,\\
"\\
\includegraphics[max width=\textwidth, alt={}, center]{08e3b0b0-2155-4b37-83e3-343c317ca10c-09_42_31_1213_1304}\\
"\\
\hfill \mbox{\textit{Edexcel AS Paper 2 2022 Q4 [2]}}