APFIVE Influence on Regression Slope
A dataset of 30 points has a regression line with slope 0.85. When analyzing influence, a student finds that removing point (12,18) changes the slope to 0.65, while removing point (4,9) changes it to 0.83. What can be concluded?
A
Point (4,9) is more influential than point (12,18)
B
Both points have equal influence on the regression
C
Point (12,18) is more influential than point (4,9)
D
Neither point is influential since r² wasn’t reported
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