OCR PURE — Question 13 7 marks

Exam BoardOCR
ModulePURE
Marks7
PaperDownload PDF ↗
TopicData representation
TypeInappropriate graph type selection
DifficultyEasy -2.5 This is a data interpretation question involving reading radar diagrams and making basic comparisons. It requires no mathematical calculation beyond reading values from a graph, and involves only descriptive reasoning about population trends. This is well below typical A-level pure maths content in difficulty.
Spec2.02a Interpret single variable data: tables and diagrams2.02i Select/critique data presentation

The radar diagrams illustrate some population figures from the 2011 census results. \includegraphics{figure_13} Each radius represents an age group, as follows:
Radius123456
Age group0-1718-2930-4445-5960-7475+
The distance of each dot from the centre represents the number of people in the relevant age group.
  1. The scales on the two diagrams are different. State an advantage and a disadvantage of using different scales in order to make comparisons between the ages of people in these two Local Authorities. [2]
  2. Approximately how many people aged 45 to 59 were there in Liverpool? [1]
  3. State the main two differences between the age profiles of the two Local Authorities. [2]
  4. James makes the following claim. "Assuming that there are no significant movements of population either into or out of the two regions, the 2021 census results are likely to show an increase in the number of children in Liverpool and a decrease in the number of children in Rutland." Use the radar diagrams to give a justification for this claim. [2]

The radar diagrams illustrate some population figures from the 2011 census results.

\includegraphics{figure_13}

Each radius represents an age group, as follows:

\begin{center}
\begin{tabular}{|c|c|c|c|c|c|c|}
\hline
Radius & 1 & 2 & 3 & 4 & 5 & 6 \\
\hline
Age group & 0-17 & 18-29 & 30-44 & 45-59 & 60-74 & 75+ \\
\hline
\end{tabular}
\end{center}

The distance of each dot from the centre represents the number of people in the relevant age group.

\begin{enumerate}[label=(\roman*)]
\item The scales on the two diagrams are different. State an advantage and a disadvantage of using different scales in order to make comparisons between the ages of people in these two Local Authorities. [2]

\item Approximately how many people aged 45 to 59 were there in Liverpool? [1]

\item State the main two differences between the age profiles of the two Local Authorities. [2]

\item James makes the following claim.

"Assuming that there are no significant movements of population either into or out of the two regions, the 2021 census results are likely to show an increase in the number of children in Liverpool and a decrease in the number of children in Rutland."

Use the radar diagrams to give a justification for this claim. [2]
\end{enumerate}

\hfill \mbox{\textit{OCR PURE  Q13 [7]}}