Planning a statistical enquiry
Planning a Statistical Enquiry
Defining the Problem
- Define the problem or question that the statistical enquiry will aim to answer.
- Identify the target population for the enquiry.
- Outline the aims and objectives of the investigation.
Constructing a Plan
- Decide on a method of data collection that can help address the enquiry. This can be a survey, experiment, observational study, etc.
- Choose sampling techniques appropriate for the population, considering factors such as bias and reliability.
- Specify the hypothesis to be investigated.
Designing an Instrument
- Design data collection instruments such as questionnaires or observational checklists.
- Ensure the instrument is valid and reliable, and it measures what is intended to.
- Use measurements that are understandable and relatable to the target population.
Conducting the Enquiry
- Implement the data collection plan in the field, ensuring ethical considerations are met.
- Monitor the process to ensure it aligns with the planned methodology.
Analysing and Interpreting the Results
- Use appropriate statistical techniques for analysing the gathered data.
- Interpret results with respect to the set objectives of the enquiry.
- Consider limitations of the data and your methodology when interpreting results.
Presenting and Discussing the Findings
- Compile the collected data into suitable graphical or tabular forms for easy interpretation.
- Provide a summary of the findings, noting any patterns, differences or similarities seen.
- Discuss the outcomes relating them to the original problem or enquiry.
Remember, not every statistical enquiry will follow this process exactly, but this guide provides a useful structure for most investigations.