Homework One
Notes:
(1) You are required to work independently. Plagiarism is strictly prohibited.
(2) Please submit your typed answers or copy of your handwriting to the specified
online folder.
(3) Due date is 9:00pm (Beijing time) 12/20/2023
Q1 (10 points)
Show that, when estimating ?!, it is best to have ?
#=0. What is Var(?
$
!) in this case?
Q2 (10 points)
Suppose we have some election outcomes and campaign expenditures for two party candidates in
the U.S.. Theare are two candidates, A and B, let voteA be the percentage of the vote received by
Candidate A and shareA be the percentage of total campaign expenditures accounted for by
candidate A.
The estimated equation using the 173 observations is:
?????
& = 26.81 +0.464shareA, n= 173
What is the predicted vote for candidate A if shareA = 60
Q3 (20 points)
Prove that SST=SSE+SSR
Q4 (20 points)
Please derive the ordinary least square estimates for simple linear regression model
