# Statistical Diagrams

Scheme of work: GCSE Foundation: Year 9: Term 1: Statistical Diagrams

#### Prerequisite Knowledge

• Solve comparison, sum and difference problems using information presented in a line graph
• complete, read and interpret information in tables, including timetables.

#### Success Criteria

• interpret and construct
• frequency tables
• bar charts
• pie charts
• pictograms
• pie charts
• for categorical data.
• interpret and construct
• vertical line charts for ungrouped discrete numerical data
• tables and line graphs for time series data
• and know their appropriate use.

#### Key Concepts

• Frequency tables must not have overlapping categories.
• Diagrams must not imply bias (e.g., equal width bar charts0
• Pictograms need to use suitable symbols to illustrate fractional amounts
• Students need to spend time interpreting the diagrams as well as creating them.

#### Common Misconceptions

• Bar charts are often drawn with unequal-width bars.
• Students often use nonlinear scales for bar and line graphs.
• The frequency is often incorrectly taken as the angle when drawing pie charts.
• Diagrams are often drawn without the correct labels and missing titl

## Statistical Diagrams Resources

### Mr Mathematics Blog

#### Interpreting Cumulative Frequency Graphs

Linking cumulative frequency graphs to ratio, percentages and financial mathematics.

#### Higher GCSE Maths Revision Lesson

In this lesson there are five grade 8 and 9 maths problems for higher ability students.