Generate data visualisation and understand the mathematics required to derive these visualisations.
3.3.1 C1a
Basic foundation content | Additional foundation content | Higher content only |
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Represent data sets pictorially using calculated key values as necessary, and interpret and compare data sets displayed pictorially as:- tabulation
- tally
- pictogram.
| Represent data sets pictorially using calculated key values as necessary, and interpret and compare data sets displayed pictorially as:- pie chart
- stem and leaf diagram
- Venn diagram.
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Notes: includes back-to-back stem and leaf diagrams.
3.3.2 C1b
Basic foundation content | Additional foundation content | Higher content only |
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Interpret and compare data sets displayed pictorially. | Interpret and compare data sets displayed in the following formats:- population pyramid
- choropleth map.
| Interpret and compare data sets displayed in the following formats:- comparative pie chart
- comparative 2D representations
- comparative 3D representations.
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Notes: students will not be expected to draw 3D representations.
3.3.3 C2
Basic foundation content | Additional foundation content | Higher content only |
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Represent data sets graphically using calculated key values as necessary, and interpret and compare data sets displayed graphically as:- bar charts
- line charts
- time series
- scatter charts.
| Interpret and compare data sets displayed graphically as:- bar line charts
- frequency polygons
- cumulative frequency (discrete and grouped) charts
- histograms (equal width)
- box plots.
| Calculate and use frequency density to draw histograms (unequal width), and interpret and compare data sets displayed in histograms (unequal width). |
Notes: includes dual, multiple, composite and percentage bar charts. Includes cumulative frequency step polygons for discrete data.
3.3.4 C3a
Basic foundation content | Additional foundation content | Higher content only |
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Justify the appropriate format and produce accurate visualisation of data. | | |
Notes: justifications include, but are not limited to, the type of data.
3.3.5 C3b
Basic foundation content | Additional foundation content | Higher content only |
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Recognise where errors in construction lead to graphical misrepresentation including but not limited to incorrect scales, truncated axis, distorted sizing. | | Recognise where the misuse of formula when calculating the frequency densities of histograms can lead to graphical misrepresentation. |
Notes: students will be expected to critique graphical misrepresentation from secondary sources.
3.3.6 C4a
Basic foundation content | Additional foundation content | Higher content only |
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Extract and calculate corresponding values in order to compare data sets that have been presented in different formats and be able to present the same information in multiple formats. | | |
Notes: students should be able to, for example, compare medians and interquartile ranges or means and standard deviations. These may be given or may have to be calculated.
3.3.7 C4b
Basic foundation content | Additional foundation content | Higher content only |
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Select appropriate form of representation. | Select and justify appropriate form of representation with regard to the nature of data. | |
