EXERCISE 2.].
Gas Mileage of5 Test Cars
15 16 17 18 19 20
Miles Per Gallon
PROBLEM ,4
GasMileage-ofAutomobiles in 1975
9
5 CO
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10 12 14 16 18
Miles per Gallon
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= I C177%; Frequency
Gas Mileage of Automobiies in
STA305 s14 Computer
Assignment One Quiz in lecture on
Monday Jan. 20th
The SAT Data
In the United States, admission to university is based partly on
high school marks and recommendations, and partly on applicants'
performance on a standardized multiple ch
STA305H1S Assignment 1
Ying Wu, 997366023
Problem 1 [10 points]
Suppose that we have data on the weight loss of 100 people, each person being assigned
to one specific diet so that each diet is being applied to the same number of people. In
performing the
Homework 1 - STA305/1004
due back Feb 25
Problem 1 [10 points]
Suppose that we have data on the weight loss of 100 people, each person
being assigned to one specic diet so that each diet is being applied to the
same number of people. In performing the ANO
STA305s14 Computer
Assignment Four Quiz in lecture on
Monday March 3d
The data set from the scab disease study (first introduced in
Assignment 2) was incomplete. Actually, the treatment was
applied to fields in either the Spring or the Fall. You have been
SAS: The last of the great
mainframe stats packages
STA305 Winter/Spring 2014
Suggested Reading
Data analysis with SAS, Chapter Two
It almost seemed like there was one
for every major university
DATATEXT: Ha
STA305 s14 Computer
Assignment Two Quiz in lecture on
Monday Jan. 27th
The Sulphur Data (Version One)
Scab disease is a fungal infection that affects potatoes. The fungus
does not grow well in acidic soil, so investigators designed a study
to see whether
STA305s14 Computer
Assignment Seven Quiz in lecture on
Monday March 31st
A company studied the effects of three different types of
promotions on sales of its crackers:
Treatment 1: Sampling of product by customers in store
and regular shelf space.
Treatm
STA305s14 Computer
Assignment Three Quiz in lecture on
Monday Feb. 10th: Bring a calculator.
This is a continuation of your work on the sulphur and scab disease
data used in Assignment 2. One possibility is to start by making a
copy of your SAS program fr
STA305s14 Computer
Assignment Four Quiz in lecture on
Monday March 3d
In the Chick Weights data, newly hatched chicks were randomly
allocated to six groups, and each group was given a different feed
supplement. Their weights in grams after six weeks were
The Math Data*
tuzo.utm.utoronto.ca:~% mkdir 305s14
tuzo.utm.utoronto.ca:~% cd 305s14
tuzo.utm.utoronto.ca:~/305s14% ls
tuzo.utm.utoronto.ca:~/305s14% curl http:/www.utstat.utoronto.ca/~brunner/
305s14/code_n_data/lecture/exploremath.data > exploremath.da
Question 3
(a) Assignment mechanism is the process for deciding which units receive treatment and which receive
control. In this case we treat the new surgery as treatment and the standard surgery as control. Ignorable
assignment mechanism means the assig
STA305s14 Computer
Assignment Six Quiz in lecture on
Monday March 24th
I know this is pretty gruesome, but the data are real - from the U
of T School of Dentistry.
An experiment in dentistry seeks to test the effectiveness of a drug
(HEBP) that is suppose
STA305s14 Computer
Assignment Eight For the Regular
final exam
You will not bring any printouts to the final exam. You will
answer questions based on my SAS program and list file. So this is
just an opportunity to familiarize yourself with the data and
co
STA305/1004
Hand-in assignment #3
Due: January 29, 2014 at the beginning of class (11:10) in FG103.
The required textbook by Box, Hunter, and Hunter is abbreviated BHH.
I encourage students to work together
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FORM
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Question
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MC2
MC3
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MC4
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STA305
march 12, 2014
BLOCKING THE
K
2
FACTORIAL
In
a trial conducted using a 23 design it might be desirable to
use the same batch of raw material to make all 8 runs.
Suppose
that batches of raw material were only large enough
to make 4 runs.
Then
the
1: The experimental design in this question is completely randomized design.
But students can also view this as a random block design.
3: According to the anova table, the F-test have p-value equals to 0.004166 <
0.05. Hence we have a strong evidence to r
STA305/1004 Experimental Design Midterm Review/Practice Problems
February 4, 2013
Major concepts:
1. Randomization as a technique to reduce experimental bias.
2. Randomization distribution and randomization test for
STA305/1004
Hand-in assignment #2
Due: January 22, 2014 at the beginning of class (11:10) in FG103.
The required textbook by Box, Hunter, and Hunter is abbreviated BHH.
I encourage students to work together
Homemade Factorial Experiment
Due Date: Wednesday, March 26, 2014 at 11:10AM
Plan and perform a homemade factorial experiment, and collect and analyze the
data. I leave it to each individual student to decide
Solution to STA305 HW 2
prepared by Zhenhua Lin
January 23, 2014
Q1 The line index<-samle(12,size=6,replace=F) randomly divide 12 observations into 2 groups with
equal sizes. The difference of the means of these two groups is then calculated in the line b
STA305H1/STA1004H: Experimental Design
Winter 2014
Tentative Course Schedule
Week
Topics
January
6-10
Experiments,
Observational
Studies,
randomization,
replication,
blocking
Review of normal
theory tests and
confidence
intervals, basic
decision theory,
p
STA305/1004 (L0101/L0201) Winter 2017 - Homework 1
Due Date: Friday, January 27, 2017 at 22:00.
E-mail submissions will NOT be accepted.
You will be required to submit the assignment via Crowdmark.
A Crowdmark submission link will be sent to you via yo
STA305/1004
Hand-in assignment #4
Due: February 5, 2014 at the beginning of class (11:10) in FG103.
The required textbook by Box, Hunter, and Hunter is abbreviated BHH.
The textbook by Dean and Voss, Design
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Midterm Examination 2 for Spring 2011
8
(Confronting
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1) What percentage of carbon released to the atmosphere by humans is estimated to be due
to deforestation?
a) 75%
b) 50%
c) 30%
d) 15%
e) 5%
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Appendix
Section 1b
#step-by-step matrix mutiplication example for weighing problem
X <- matrix(c(1,1,1,1,-1,0),nrow=3,ncol=2) #define X matrix
Y <- t(X)%*%X # multiply X^T by X (X^T*X)
W <
Question 4
a)
t.test(diff)
#
#
#
#
#
#
#
#
#
#
#
One Sample t-test
data: diff
t = 0.29553, df = 5, p-value = 0.7795
alternative hypothesis: true mean is not equal to 0
95 percent confidence interval:
-15.39659 19.39659
sample estimates:
mean of x
2
qqnorm
Question 3
a) Randomized paired comparison design was used in this study. We are making comparisons within
matched pairs of experimental material; we randomize within a pair. Our pair in this case is the pair of
two subplots from each plot of land. Each p
STA305 Assignment 1
Alan Yang
January 24, 2017
student number: 1000384531
section: LEC 0101
Quesiton 2
a) The randomization distribution of the difference in median sales between the two web pages contains
(10000 5000) = 10000-choose-5000 values (close to