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Nikhil is investigating the growth patterns of a certain species of slug and measures their…
Nikhil is investigating the growth patterns of a certain species of slug and measures their thickness, $t$, and length, $l$. The results are shown below:
Using scatter diagram, explain why a line of best fit should not be used for this data?
| Thickness $t$ (mm) | Length $l$ (cm) |
|---|---|
| 9 | 5.9 |
| 8 | 4.1 |
| 3 | 2.1 |
| 6 | 1.8 |
| 4 | 3.0 |
| 10 | 7.8 |
Answer
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From ISC 2025 Practice Mathematics, question 69.