In this task students construct line graphs for time series data, calculate the moving average and interpret the graph, stating conclusions.

Overview of task

In this task students construct line graphs for time series data, calculate the moving average and interpret the graph, stating conclusions.

Strand

Statistics

Prior knowledge

Students will need to know how to calculate mean for a set of values, how to plot a line graph, and how to round to significant figures.

Relevance to Core Maths qualifications

Pearson / Edexcel

Suggested approaches

After the initial teacher introduction suggested in the accompanying lesson plan, this task will be suitable for independent work and student homework.

Resources/documentation

The following resources are supplied:

- Lesson plan
- Moving Averages PowerPoint presentation
- Moving Averages data and charts (Excel spreadsheet)

Students will need access to graph paper if the diagrams are to be drawn by hand.

Relevant digital technologies

PowerPoint/ spreadsheet/ websites/ calculator

Possible extensions

Find other data that could be used for a time series analysis. Discuss how the moving average can be used to predict values in the future. Research examples of the moving average that have been used to show trends and make predictions, e.g. global warming.

Acknowledgement

The original Moving Averages activity was sourced from the TES, having been submitted by TES user ‘Kentishman’. This was adapted and extended by Judith Murphy of Bury College to produce the current resource for Core Maths.