[Q&A] Chapter 7: Correlation and Simple Linear Regression

Solutions 1
Solutions to Questions
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Solutions 2
Solutions to Questions
Question 1
The jth element of XT Y for 2 ≤ j≤ d +1 will be ∑
i=1
n
( xi . j −1− x j−1).
Question 2
The first line that is false is LINE 4.
Question 3
The distribution of V given Z N p (Op , A ) and V = A−1 Z will be N p (Op , AAT ).
Question 4
Given the values of n= 39, d = 13, T = 149.89 and R = 35.89. the value of mean square
regression will be 1.4 .
Question 5
Standard notations as used in unit 12. The two incorrect notations are, ^y=HT H y and
S2=R / ( n−2 ).
Question 6
The correct statement about Gauss-Markov theorem is that the Gauss-Markov theorem concerns
the existence of a minimum variance unbiased estimator of a linear combination of the
parameters of a general linear model.
Question 2(1)
The correct reason for each of the models to not be GLM with EDF response is (a) Predictor, (b)
Link, (c) Response.
Question 3(1)