Statistics 106
Homework 1
Due : Jan. 13, 2016, In Class
15.1
In an experiment to study the eect of the location of a product display in drugstores of a chain, the
manager of one of the drugstores rearranged the displays of other products so as to increase
Statistics 106
Fall 2013
Homework 1
Due date : October 9 (Wednesday)
1. Problem 15.1 : In an experiment to study the eect of the location of a product
display in drugstores of a chain, the manager of one of the drugstores rearranged the
displays of other
Statistics 106
Winter 2013
Homework 1
Due date : January 18 (Friday)
1. Problem 15.1 : In an experiment to study the eect of the location of a product
display in drugstores of a chain, the manager of one of the drugstores rearranged the
displays of other
SSTO = SSE + SSTR
=
df(SSTO) = df(SSE) + df(SSTR) (nT 1) = (nT r) + (r 1)
Type I error: reject the null hypothesis when it is true
Type II error: accept the null hypothesis when it is wrong
Powr: probability of rejecting null hypothesis when it is wrong
P
STA 106: Practice Midterm Solutions
Spring 2015
For all questions you must show your work. This enables us to understand your
thought process, give partial credit and prevent cheating.
You should answer all of the problems in this exam.
I This exam has 7
A. Farris
STA 106
Final Exam Practice
Summer 2015
Name:
Answer ALL of the following questions. Explain your answers succinctly for full credit.
1. (15 points) Use the ANOVA table below to address the following problems.
Analysis of Variance Table
Response
Statistics 106
Winter 2013
Homework 4
Due date : February 22 (Friday)
1. Problem 18.6 : Refer to the Rehabilitation therapy problem 16.9.
(a) Obtain the residuals and prepare aligned residual dot plots by factor level.
What departures from ANOVA model (16
Statistics 106
Spring 2016
Homework 1
Due date : April 8 (Friday)
1. Problem 15.1 : In an experiment to study the eect of the location of a product
display in drugstores of a chain, the manager of one of the drugstores rearranged the
displays of other pro
STA 106: Homework 4
Due: 3:10pm, Wed 6th May
Assigned: Tuesday, 28th April
For all questions you must show your work. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct in
STA 106: Homework 5
Due: 3:10pm, Wed 13th May
Assigned: Wednesday, 6th May
For all questions you must show your work. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct in
Statistics 106
Homework 4 Solution
NOT Due
17.1
A student, asked to give a class demonstration of the use of a condence interval for comparing two
treatment means, proposed to construct a 99 percent condence interval for the pairwise comparison
D = 5 3 ,
STA 106
Solution to Homework 5
Problem 19.5
.j = .j . = 0 (j = 1, 2, 3, 4). This implies that factor B
(a) .j = 269 (j = 1, 2, 3, 4),
seems to have no eect.
(b) The treatment means plots are shown below. If the curves are not parallel, then interaction
29
STA 106
Solution : HW 7
1
Problem 21.7
(a) The researcher wants to study the eect of three experimental diets with varying fat contents
on the total lipid level in plasma which has a correlation with the persons age. Thats why
the researcher divided his s
STA 106: Homework 6
Due: 3:10pm, Wed 20th May
Assigned: Wednesday, 13th May
For all questions you must show your work. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct i
Statistics 106
Winter 2013
Homework 6
Due date : March 8 (Friday)
1. Problem 19.31 : Refer to the Eye contact eect problems 19.12 and 19.13.
(a) Estimate 21 with a 99% condence interval. Interpret your interval estimate.
(b) Estimate 1 with a 99% condence
STA 106:
Applied Statistics:
Analysis of Variance
Lecture 1
Irina Udaltsova
Department of Statistics
University of California, Davis
March 30th, 2015
Welcome!
What?
STA 106: Analysis of Variance (Topics in Applied Statistics)
Where?
Max Kleiber Hall 3
Whe
Statistics 106
Winter 2013
Solution : Sample Final Exam
Print name:
Print ID (last four digits):
Sign name:
Instructions: This is a closed book exam. Two pages of notes are allowed (double sided,
handwritten). The total score is 100. You must show your wo
Homework 6 Solutions
STA 106, Spring 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Solution to Homework 3 STA 106 Winter 2013
Problem 1. We calculate
1n
1n
s=
64 = n
r
44
Here, we have 1 = r 1 = 3 and = 0.05. So we look at Table B.11 of
textbook at Page 1338 corresponding to 1 = 3 and = 0.05
=
By trial and error method (starting with n
Homework 5 Solutions
STA 106, Winter 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Homework 1 Solutions
STA 106, Winter 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Midterm1 (50 minutes)
1
20 5 = 100
1. In a balanced incomplete block design we have we have 5 treatments but each block can only accomodate
3 treatments. What is the minimum number of blocks required for all possible treatment combinations of
size 3.
(a)
Homework 3 Solutions
STA 106, Winter 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Homework 2 Solutions
STA 106, Winter 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Statistics 106
Fall 2013
Solution : Sample Final Exam
Print name:
Print ID (last four digits):
Sign name:
Instructions: This is a closed book exam. Two pages of notes are allowed (double sided,
handwritten). The total score is 100. You must show your work
STA 106: Homework 2
Due: 3:10pm, Wed 15th April
Assigned: Friday, 8th April
For all questions you must show your work. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code of
the conduct i
Homework 7 Solutions
STA 106, Spring 2015
For all questions you must show your working. This enables us to understand your
thought process, give partial credit and prevent crude cheating. Please see the code
of the conduct on Smartsite for rules about col
Statistics 106
Analysis of Variance
Summer Session I - 2017
Two Factor Anova with One Replicate
When we have just one observation per cell, or one
replicate per treatment, we have no degrees of freedom
to estimate the error. Note that in this case
(
)2
Yi
Statistics 106
Analysis of Variance
Summer Session I 2017
Unequal Number of Replicates
When we have the same number of replicates per treatment in a factorial design, the test for factor eects are
not aected by other factors in the model. The F-test
for f
The following models analyzed in R are used to answer questions
in problems 3 and 4 on the sample final exam.
Variables needed:
rating = outcome variable, rating of damage due to Elm beetle
xc=x variable for tree factor level c (tree has 4 levels: c,f,l,p
l O cfw_mill0;
Stat 106 - Sample Final Exam, SSI 2016
Problem 1:
An arborist is planning an experiment to study Elm beetle injury to trees. The
scientist plans to conduct the experiment on 4 different types of trees and for 2 different
years. The outcome