ST512
Fall Semester, 2008
Quiz 2
Name:
Directions: Answer questions as directed. Please show work. Partial credit may be awarded for correct expressions given in incomplete answers. To save time, it i
ST 512 Homework assignment #4
Dr. Jason A. Osborne
1. Obtain the residuals from a simple linear regression of bodyfat percentage
on midarm circumference (x2 ) using the dataset bodyfat.dat. Obtain a
p
ST 512-Practice Exam I - Osborne
Directions: Answer questions as directed. For true/false questions, circle either true or false. 1. A study was carried out to examine the relationship between the num
ST512
Fall Semester, 2013
Quiz 2 - solution
1. A completely randomized experiment investigates the eects of increasing nitrogen (N) and
copper (Cu) to the diet of chickens. Feed conversion ratio (FCR)
ST512
Fall Semester, 2013
Quiz 1
Name:
Directions: Answer questions as directed. Show work. Partial credit may be awarded for correct
expressions given in incomplete answers.
You may use the back of t
ST512
Spring, 2009
Quiz 1
Name:
Directions: Answer questions as directed. Please show work. Give expressions for answers
where possible, as partial credit may be awarded in cases where expressions are
Quiz 1, Spring 2009 - solutions 1. (30 points) Blood pressure increase with age in kids. A study measured diastolic blood pressure and age (in years, ranging between 5 and 13, with an average of x = 9
ST512
Fall Semester, 2013
Quiz 1 Solutions
1. (24 pts) Short answers:
(a) A random sample of n = 19 bivariate observations yields a sample correlation coecient
of rxy = .5. Are X and Y plausibly indep
ST512
Spring, 2010
Quiz 1
Name:
Directions:
Silence or turn o your cell phones.
Do not look at or begin the quiz until the entire class is given permission to do so.
When the end of the quiz is ann
ST512, Spring, 2010
Quiz 1 - solutions
1. (20 points) A random sample of n = 20 elements is drawn from a population of interest
and two attributes, denoted xi and yi are measured on each element i. So
ST512
Fall Semester, 2008
Quiz 1- solution
1. In NFL games from a sample of n = 682 games, two measurements are made: the
published point spread x and margin of victory y for the favored team. A simpl
ST512
Fall Semester, 2008
Quiz 1
Name:
Directions: Answer questions as directed. Please show work. Partial credit may be awarded
for correct expressions given in incomplete answers. To save time, it i
ST512-R
Homework #10
1. (Taken from Rao 16.8, p. 765) An experiment evaluates the taste of three brands
of ice cream under dierent storage conditions. The expt. calls for 12 coolers to be
randomized t
5-point bonus questions preceding quiz 2, ST512 - Osborne These problems are not required. To receive credit, you must work independently. 1. Consider a multiple linear regression involving a sample o
Rough Table of Contents for notes that accompany the lectures
Topic
Pages
Simple linear regression (SLR) - heights example
1-9
Simple linear regression
10
Correlation
12-20
Probability Model for SLR
2
ST 512 Homework assignment #7
Dr. Jason A. Osborne
1. Consider the data from exercise 13.31 (p. 632).
(See the code entitled sleep.sas). Note that while the means for all
t = abc = 12 treatment combin
ST512
Summer Session II, 2008
Quiz 1
Name:
Directions: Answer questions as directed. Please show work. Give expressions for answers where possible, as partial credit may be awarded in cases where expr
ST512, Summer Session II, 2008 Quiz 1 - solutions 1. (20 points) Four scatterplots appear below. (a) For each sample correlation coecient, circle the letter of the corresponding plot (one letter per c
ST512
Fall Semester, 2008
Quiz 2
Name:
Directions: Answer questions as directed. Please show work. Partial credit may be awarded
for correct expressions given in incomplete answers. To save time, it i
ST512
Fall Semester, 2006
Quiz 4
Name:
Directions: Answer questions as directed. Please show work. You do not need to carry out any arithmetic that is obvious for the grader. For example, if the corre
ST512 handout Modelling factorial effects: fixed, or random? Random Fixed Levels - selected from conceptually popn of collection of levels - finite number of possible levels Another expt - would use s
ST512
Fall Semester, 2006
Quiz 4
Name:
Directions: Answer questions as directed. Please show work. You do not need to carry out any arithmetic that is obvious for the grader. For example, if the corre
ST512
Fall Semester, 2006
Quiz 4
Name:
Directions: Answer questions as directed. Please show work.
There are 4 problems, worth 25 points each, on 5 pages. After the problems, there are three pages of
ST512
Summer Session II, 2008
Quiz 3-solutions
1. An industrial engineer investigates the eect of three dierent types of computer mouse
on repetitive motion disorders (RMD). She is able to recruit N =
ST512
Summer Session II, 2008
Quiz 3
Due date to be determined
Name:
Directions: Please work independently. Answer questions as directed. Please show work. Give expressions for answers where possible,
ST512
Spring, 2009
Quiz 3
Name:
Directions: Answer questions as directed. Please show work. Give expressions for answers
where possible, as partial credit may be awarded in cases where expressions are
ST512 Fall Semester, 2006 Quiz 3-solutions 1. (Taken from Ott and Longnecker, Ch. 17) An experiment measures tablet hardness by randomly selecting three batches of a formulation for a drug, then rando