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Author Question: A global minimum a. is also a local maximum. b. need not be a local maximum, but vice versa is ... (Read 158 times)

Awilson837

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on: Jun 24, 2018
A global minimum
 a. is also a local maximum.
  b. need not be a local maximum, but vice versa is true.
  c. is also a local minimum.
  d. need not be local minimum, but vice versa is true.

Question 2

A normally distributed error term with mean of zero would
 a. have values that are symmetric about the variance.
  b. allow more accurate modeling.
  c. yield biased regression estimates.
  d. be a hyperbolic curve.


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ryhom

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Reply #1 on: Jun 24, 2018
Answer to Question 1

c
RATIONALE: A global minimum is also a local minimum.

Answer to Question 2

b
RATIONALE: The practical implication of normally distributed errors with a mean of zero and a constant variation for any given combination of values of x1, x2, . . . , xq is that the regression estimates are unbiased, possess consistent accuracy, and tend to err in small amounts rather than in large amounts.


Awilson837

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Reply #2 on: Jun 24, 2018
Thank you :)


ryhom

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Reply #3 on: Jun 24, 2018
Happy to help you


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