EXST 7015 - Statistical Inference II, Fall 2011
Lab 9: Logistic Regression
OBJECTIVES
Logistic Regression is a type of predictive model that can be used when the dependent
variable is a categorical variable with two categories for example male/female, fai

EXST7015
Daily Design 7
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
Sweet potato (SP) is grown as dry season forage for sheep. In order to
study the effect

EXST7015
Daily Design 8
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
In order to study the effect of cutting management on quality of
sweet potato (SP) used

EXST7015
Daily Design 9
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
Forestry production is limited in the Bolivian high plains. High altitude, low rainfall

EXST7015
Daily Design 10
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
A 35-day feeding trial with Hubbard broilers (i.e. chickens) was carried out to evalua

EXST7015
Daily Design 11
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
Endophytes are organisms that live within another organism without causing apparent ha

EXST7015
Daily Design 12
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
Aflatoxins, toxic metabolites of the mold fungi Aspergillus
flavus or Aspergillus para

EXST7015
Daily Design 13
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
A graduate student in education believes that both adults and children learn better un

EXST7015
Daily Design 14
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
ABSTRACT: Cotton producers are looking for ways to economize on cottonseed when it com

EXST7015
Daily Design 15
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
In a Likert scale the subjects are asked to express agreement with a question on a sca

EXST7015
Daily Design 6
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
Iron deficiency (ID) and iron deficiency anemia
(IDA) are highly prevalent among young

EXST7015
Daily Design 5
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
Fruit flies are major fruit pests with the potential for causing considerable commercia

EXST7015
Daily Design 4
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
An experiment was conducted to compare production of bell
peppers planted in 4 differen

EXST 7015 - Statistical Inference II, Fall 2011
Lab 10: ANOVA and Post ANOVA Test
OBJECTIVES:
Analysis of variance (ANOVA) is the most commonly used technique for comparing the
means of groups of measurement data. There are lots of different experimental

The linear model and symbolic notation of source ANOVA table for
the nested design with subsampling.
The linear model: yijk = + i + j(i) + k(ij) (i = 1, 2, , a; j = 1, 2, , b; k =1, 2, , n)
Source
DF
EMS
Treatment
a-1
2 + n 2 + nb( i /( a 1)
Sampling (Tre

EXST 7015 - Statistical Inference II, Fall 2011
Lab 11: Randomized Block Design and Nested Design
OBJECTIVES:
The objective of an experimental design is to provide the maximum amount of reliable
information at the minimum cost. In statistical terms, the r

EXST 7015 - Statistical Inference II, Fall 2011
Lab 11: Latin Square Design and Expected Mean Square
OBJECTIVES:
The objective of an experimental design is to provide the maximum amount of reliable
information at the minimum cost. In statistical terms, th

Answers (Lab 13):
1. Linear model of the split plot design with repeated measures:
Yijk = + i +j + ()ij +k + ()jk + ()ik + ()ijk (i=1,2,5; j=1,2,4;
k=1,2,4)
Yijk: yield of Cultivar j in cut time k of replication i;
i: (random)effect of replication i;
j: (

EXST 7015 - Statistical Inference II, Fall 2011
Lab 11: Split-Plot Design with Repeated Measures
OBJECTIVES:
The objective of an experimental design is to provide the maximum amount of reliable
information at the minimum cost. In statistical terms, the re

EXST7015
Daily Design 1
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
In one part of a larger study an investigator raised 64 pigs in the manner described be

EXST7015
Daily Design 2
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
Dont use this example for class on August 30, 2011. Use the example below.
Salmon build

EXST7015
Daily Design 3
Carefully read the description of the experiment below. Be prepared to answer the questions
that follow the design description as a class quiz.
An experiment was conducted to examine the effect of supplementing different green feed

EXST7015
Daily Design 16
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
This study examined the effects of water, both served with a food and incorporated int

EXST7015
Daily Design 17
Carefully read the description of the experiment below. Be prepared to answer the questions that
follow the design description as a class quiz.
A student from an Agricultural Engineering school is studying
the use of cow and pig m

Statistical Techniques II
Page 21
Residual plots (produced by either PROC REG or PROC PLOT)
Residual plots are a useful tool for detecting various problems
Outliers
Curvature
Non-homogeneous variance
and more
Univariate tests & graphics (with options norm

Statistical Techniques II
Page 76
Analysis of Variance and Experimental Design
The simplest model or analysis for Analysis of Variance (ANOVA) is the CRD, the Completely
Randomized Design. This model is also called One-way Analysis of Variance.
Unlike reg

Statistical Techniques II
Page 26
Here we have tree diameter and tree weight. Lets try a log-log model (using natural logs).
Since we are fitting a linear measurement to a volumetric or weight measurement, I
expect the following relationship to apply.
1gm

Statistical Techniques II
Page 47
It is a sample various hospitals. Data was taken for the Study of the Efficacy of Nosocomial
Infection Control (SENIC Project).
Each observation is for one hospital. There were 113 observations.
The variables are as follo

Statistical Techniques II
Page 32
Multiple regression
Multiple regression involves two or more independent variables (Xi), but still only a single dependent
variable (Yi). There is an analysis for multiple dependent variables, it is called multivariate re

Statistical Techniques II
Page 52
The variance for Y is S
2
YY | X
(
X i X .
1
MSE
n X i X . 2
2
)
The the variance for an individual observation, Yi, is
Yi Yi ei
2
SY
Y |X
2
2
1
X i - X . MSE MSE 1 1 X i - X .
MSE
n X i - X . 2
n X i - X . 2
Yo