Inappropriate graph type selection

Questions asking students to explain why the chosen type of graph or diagram is inappropriate for the data being represented (e.g., wrong chart type, bipartite graph used incorrectly, radar diagrams for inappropriate comparisons).

3 questions · Easy -2.0

2.02i Select/critique data presentation
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OCR H240/02 2018 September Q10
6 marks Easy -1.8
10 The table shows information, derived from the 2011 UK census, about the percentage of employees who used various methods of travel to work in four Local Authorities.
Local AuthorityUnderground, metro, light rail or tramTrainBusDriveWalk or cycle
A0.3\%4.5\%17\%52.8\%11\%
B0.2\%1.7\%1.7\%63.4\%11\%
C35.2\%3.0\%12\%11.7\%16\%
D8.9\%1.4\%9\%54.7\%10\%
One of the Local Authorities is a London borough and two are metropolitan boroughs, not in London.
  1. Which one of the Local Authorities is a London borough? Give a reason for your answer.
  2. Which two of the Local Authorities are metropolitan boroughs outside London? In each case give a reason for your answer.
  3. Describe one difference between the public transport available in the two metropolitan boroughs, as suggested by the table.
  4. Comment on the availability of public transport in Local Authority B as suggested by the table.
OCR PURE Q13
7 marks Easy -2.5
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]
SPS SPS SM Statistics 2024 September Q4
7 marks Easy -1.8
The radar diagrams illustrate some population figures from the 2011 census results. \includegraphics{figure_4} 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]