I cannot understand about this sentence. "If in fact there is correlation among the error terms, then the estimated standard errors will tend to underestimate the true standard errors." Why? Please give me a mathematical explain if you can.
Asked
Active
Viewed 39 times
1
-
What is the source of the citation? Is this a [self-study] question? – Jan Kukacka Sep 25 '18 at 10:57
-
1This is from the book, "An introduce to Statisical Learning" – Young Sep 25 '18 at 11:09