More unusual points. Each of the following scatterplots ad shows a cluster of points and one stray
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More unusual points. Each of the following scatterplots a–d shows a cluster of points and one “stray” point. For each, answer questions 1–4:
1) In what way is the point unusual? Does it have high leverage, a large residual, or both?
2) Do you think that point is an influential point?
3) If that point were removed from the data, would the correlation become stronger or weaker? Explain.
4) If that point were removed from the data, would the slope of the regression line increase, decrease, or remain the same? Explain.
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Related Book For
Business Statistics
ISBN: 9780321716095
2nd Edition
Authors: Norean D. Sharpe, Paul F. Velleman, David Bock, Norean Radke Sharpe
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