 Solution

ID: past-exam-of-the-mathematical-and-computational-biology-course-of-the-university-of-cambridge/2024/paper-1/e8/a/solution

Yes, the data are centred. Both coordinate sample means vanish:

\overset{x}{ˉ} = \frac{7 - 8 + 1}{3} = 0, \overset{y}{ˉ} = \frac{1 + 6 - 7}{3} = 0.

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