Your Basket 0 items - £0.00

Students learn how to plot and interpret various statistical diagrams ranging from pie charts to histograms with unequal class widths. Throughout the unit emphasis is place on interpreting the diagrams as much as it is plotting them.

This unit takes place in Year 9 Term 3 and is followed by calculating statistical measures such as averages and range.

- Interpret and construct:
- frequency tables
- bar charts
- pictograms

- for categorical data.
- Construct and interpret stem and leaf diagrams
- Apply statistics to describe a population

- Infer properties of populations or distributions from a sample, whilst knowing the limitations of sampling
- Interpret and construct tables and line graphs for time series data and know their appropriate useconstruct and interpret diagrams for grouped discrete data and continuous data, i.e. histograms with equal and unequal class intervals and cumulative frequency graphs, and know their appropriate use.

- Students need to spend time interpreting the diagrams as well as creating them.
- When using pie charts to compare distributions the frequency of corresponding sectors is dependent on the total sample size.
- Frequency diagrams are used to represent discrete data whereas histograms are used for continuous data.
- Histograms with unequal class widths represent data with an unequal spread. Frequency is found using the area of a bar rather than its height.
- Cumulative frequency is the running total of the frequency.
- The interquartile range (IQR) shows the boundaries of where the most representative data is located.

- Histograms are often confused with frequency diagrams.
- Students tend to be more competent with constructing the various representations than using them to analyse and make summative comments about distributions.

October 28, 2019

Last year my school had a OFSTED trial inspection. Whilst the maths team recieved favourable feedback the inspectors noted a need for a focus on whole school literacy. Because of this I was asked to demonstrate how we develop student’s literacy in mathematics. Literacy in Mathematics By developing student’s literacy in mathematics we aim to […]

October 16, 2019

There are two key learning points when solving problems with angles in polygons. The first is to understand why all the exterior angles of a polygon have a sum of 360°. The second is to understand the interior and exterior angles appear on the same straight line. Students can be told these two facts and […]

August 22, 2019

When getting ready for a new school year I have a list of priorities to work through. Knowing my team have all the information and resources they need to teach their students gives me confidence we will start the term in the best possible way. Mathematics Teaching and Learning Folder All teachers receive a folder […]