(a) If the observation marked with an x in the plot to the right is removed, how
ID: 3052524 • Letter: #
Question
(a) If the observation marked with an x in the plot to the right is removed, how will the slope of the least squares line change? Will it increase, decrease, stay the same, or change signs?
(b) What will happen to r2 and se?
(c) Is this observation leveraged?
(a) If the observation marked with an x in the plot to the right is removed, how will the slope of the least squares line change? Will it increase, decrease, stay the same, or change signs?
(b) What will happen to r2 and se?
(c) Is this observation leveraged?
11,000 10,000 9,000 8,000- 6,000 -10 10 20 30 40 50 60 70 80 90 100Explanation / Answer
a) Slope will decrease as the model will get better
b) value of r^2 will increase ans Se will decrease because the model will get better
b) Yes, because this is a outlier
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