Stage 1. Recognition of a **real-world problem**.

Stage 2. A **statistical model** is devised.

Stage 3. Model used to make **predictions.**

Stage 4. **(Experimental) data** collected.

Stage 5. **Comparisons** are made against the devised model.

Stage 6. Statistical concepts are used to **test** how well the model descrbes the real-world problem.

Stage 7. Model is **refined.**

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