Statistical enquiry cycle

A cycle that is used to carry out a statistical investigation. The cycle consists of five stages: Problem, Plan, Data, Analysis, Conclusion. The cycle is sometimes abbreviated to the PPDAC cycle.

The problem section is about formulating a statistical question, what data to collect, who to collect it from and why it is important.

The plan section is about how the data will be gathered.

The data section is about how the data is managed and organised.

The analysis section is about exploring and analysing the data, using a variety of data displays and numerical summaries, and reasoning with the data.

The conclusion section is about answering the question in the problem section and giving reasons based on the analysis section.


Curriculum achievement objectives references
Statistical investigation: All levels