AS 91583 · 4 credits · Internal
Experimental design
Conduct an experiment to investigate a situation using experimental design principles
Study with Coach
Save your actual school result to count your credits.
You'll plan and run a real experiment to answer a specific question, applying proper research design rules. You need to control what varies and what stays the same, collect and display your data properly, and draw conclusions from what you found. This is about doing statistics in action, not just theory.
What to do, grades and common mistakes
- ·Pose a clear investigative question and plan your experiment using proper design principles (like controlling variables and avoiding bias)
- ·Select experimental units, decide which variable you're changing and which you're measuring, and determine how to fairly assign treatments
- ·Conduct the experiment, collect and record data accurately, and note any problems that happen along the way
- ·Choose appropriate graphs and summary statistics to display your results, then make a statistical inference from your data
- ·Write a conclusion that explains what you found and links it back to your original question
You complete each step of the experimental process in order: ask a question, design and run the experiment, collect data, display it, analyse it, and draw a conclusion.
You explain why each design choice matters for your particular question, justify your statistical methods, and connect your findings directly to evidence from your experiment.