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May 18, 2018 at 12:39 comment added Glen_b $(I-H)X \beta=0$
May 18, 2018 at 8:00 comment added Chen Wang For the answer above, I think there is a minor mistake that e should be (I-H)(X\beta + \epsilon)
Oct 10, 2013 at 8:36 history edited Glen_b CC BY-SA 3.0
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Oct 9, 2013 at 23:17 history edited Glen_b CC BY-SA 3.0
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Oct 9, 2013 at 22:23 history edited Glen_b CC BY-SA 3.0
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Oct 9, 2013 at 22:16 history edited Glen_b CC BY-SA 3.0
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Oct 9, 2013 at 22:06 history answered Glen_b CC BY-SA 3.0