Year 4: Statistics × Interpret and present discrete data using bar charts and continuous data using line graphs New Maths Curriculum (2014): Year 4 objectives. Interpret and present discrete data using bar charts and continuous data using line graphs ? × Solve comparison, sum and difference problems using information presented in bar charts, pictograms, tables and simple line graphs New Maths Curriculum (2014): Year 4 objectives. Solve comparison, sum and difference problems using information presented in bar charts, pictograms, tables and simple line graphs ?