1. Where would you add an outlier in order to maximise the correlation?
Answer
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As far to the ends of the line of best fit as possible
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2. Where would you add an outlier in order to minimise the correlation (or make the correlation go as far as possible in the opposite direction)?
Answer
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Place the outlier as far as possible to the ends of a line which would run perpendicular to the line of best fit, crossing at the mean for X and the mean for Y
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3. Where would you add a point which does not change the correlation?
Answer
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On the mean for X and Y
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