Impact of removing outliers on regression lines | AP Statistics | Khan Academy

Impact of removing outliers on slope, y-intercept and r of least-squares regression lines.

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[HITESHKUMAR-cpjd]

In the second example, how r square will decrease?
since the sum of square residuals will decrease after removing the outlier, hence r square value must be increase . What's say ??

[josephwillyyose]

i have to same question, it seems sal want to just get thigs done quickly.