Statistics 5100
Summer 2012
Final Review
Yi = 0 + 1 Xi1 + 2 Xi2 + . . . + p1 Xi,p1 + i
(1 B ) Yt = (0 + 1 Xt,1 + . . . + k1 Xt,k1 ) + (1 1 B p B p )1 (1 1 B . . . q B q ) at
i
log
= 0 + 1 Xi,1 + . . . + p1 Xi,p1
1 i
d
Units and main ideas:
1. Single-predi
Exercise 6 [16 total points, roughly divided as follows. Students may use slightly
different approaches.]
Normal equation #1: Yi = n b0 + b1 Xi
Normal equation #2: XiYi = b0 Xi + b1 Xi2
Solve #1 for b0 and plug into #2, and get: [6 points for this part]
X
Statistics 5100
Fall 2011
Exam 2
Do not open the exam until you are instructed to do so.
Directions: You have 110 minutes (1:30-3:20) to complete the exam. Be sure to answer every
question, and do not spend too much time on any part of any question. Be co
Statistics 5100
Fall 2011
Exam 1
Do not open the exam until you are instructed to do so.
Directions: You have 50 minutes (2:30-3:20) to complete the exam. Be sure to answer
every question, and do not spend too much time on any part of any question. Be con
Statistics 5100
Spring 2010
Final Exam
Do not open the exam until you are instructed to do so.
Directions: You have 110 minutes (11:30-1:20) to complete the exam. Be concise with
all your responses.
1. (1 point) What is your name?
Data: Two data sets are
Statistics 5100
Spring 2010
Midterm Exam
Do not open the exam until you are instructed to do so.
Directions: You have 50 minutes (1:30-2:20) to complete the exam. Be concise with all
your responses.
1. (1 point) What is your name?
2. (1 point) Regarding t
Statistics 5100
Summer 2012
Exam 1
Do not open the exam until you are instructed to do so.
Directions: You have 90 minutes (11:30-1:00) to complete the exam. Be sure to
answer every question, and do not spend too much time on any part of any question. Be
(Q2) A researcher suspects that, on average, females tend to take fewer daily steps
than males, so she regresses aveStep on gender (see partial SAS output for Model
0), assuming the following linear model:
aveStepi = 0 + 1 genderi + i,
i=1, , 299
1, , 299
Statistics 5100
Summer 2012
Exam 2
Do not open the exam until you are instructed to do so.
Directions: You have 90 minutes (11:30-1:00) to complete the exam. Be sure to
answer every question, and do not spend too much time on any part of any question. Be
Data Set I: Out-of-state tuition
(Q2) A researcher suspects that, on average, universities with higher student-to-faculty
ratios tend to have lower out-of-state tuition, so she regresses ostuit on sfratio
(see partial SAS output for Model 1), assuming the