Consider the following data set. d)  testing at a 5% significance level, can you say that the intercept (β0) is not zero? How does this conclusion agree with the plot in b)? e)  Assume that the first data point is an outlier (e.g. the value was misrecorded). Remove the outlier, and redo parts b)-d). Plot the new data set and the new regression line. Comment on the difference. Also comment on the difference between the results of the tests in c) and d), if any.

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Consider the following data set.

  1. d)  testing at a 5% significance level, can you say that the intercept (β0) is not zero? How does this conclusion agree with the plot in b)?

  2. e)  Assume that the first data point is an outlier (e.g. the value was misrecorded). Remove the outlier, and redo parts b)-d). Plot the new data set and the new regression line. Comment on the difference. Also comment on the difference between the results of the tests in c) and d), if any.

 

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2.50 0.20
0.60 0.75
1.10
1.20
Transcribed Image Text:1 2 3 4 5 6. 2.50 0.20 0.60 0.75 1.10 1.20
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