Solutions for Exam 1 Stat 502 Summer 2016
Assume =0.05 unless otherwise stated. Note: if you choose to express hypotheses in terms of
effects, e.g. i , j , etc. you must show the model, and identify what each term indicates.
1) (5pts) In terms of testing
Homework Assignment for Lesson 8
1) A study was conducted to evaluate the effect of 4 diets on blood pressure. Three subjects were randomly assigned to each diet for a total of 12
participants. Because blood pressure may differ between AM and PM, subjects
Homework Assignment for Lesson 7
Please submit one document file in the ANGEL dropbox.
1) (40 pts) Consider a 2 x 2 factorial treatment design administered in in a RCBD with 3 replications.
Using variables to reflect an experiment of your choice, draw out
Homework Assignment for Lesson 6
Instructions: Please submit a single document (or pdf file) to the ANGEL dropbox for Lesson 6. You need not complete these
analyses with graphs or diagnostics. Just focus on specific questions asked.
1) (25 pts) A hospital
Homework 8 Solutions
1) Consider a study to determine the best method for producing a particular type of canned green
beans. Harvested beans are allowed to soak in a solution of herbs for either a short or long soaktime. Four crocks were available, so 2 c
Stat 502 Exam 2 Review Questions
(Assume =0.05unless otherwise stated).
1) A poultry experiment was run to investigate the effect of diet and antibiotic on egg
production. They evaluated 2 diets of interest, and 2 specific antibiotics that are on the mark
Standard Error Calculation 9/22/04
STANDARD ERROR CALCULATION
Procedure:
Step 1: Calculate the mean (Total of all samples divided by the number of samples).
Step 2: Calculate each measurement's deviation from the mean (Mean minus the individual
measuremen
To run a nested ANOVA in Mintab v. 17, use
Stat > ANOVA > General Linear Model > Fit general linear model. For the data below, considering Factor
B to be nested within the levels of Factor A,
We get the following prompt from the GLM procedure:
We specify
Intraclass Correlation and Variance Component Methods
1 of 8
http:/www.john-uebersax.com/stat/icc.htm
Introduction
Pros and Cons
The Comparability Issue
Software, Online Calculators
For More Information
This page discusses use of the ICC to assess reliabi
2 x 2 Between Subjects Factorial Design
1 of 6
https:/web.mst.edu/~psyworld/between_subjects.htm
Design
This module covers the types of designs and analyses involving more than one independent
variable. This gets tricky because its difficult when you firs
Two-Way Analysis of Variance
1 of 4
https:/people.richland.edu/james/ictcm/2004/twoway.html
Introduction
The two-way ANOVA is an extension of the one-way ANOVA. The "two-way" comes because each item is classified in two ways, as
opposed to one way.
For ex
Homework for Lesson 1
In this assignment we will generate some simple statistics in an exploratory data analysis (EDA)
by hand and with SAS, and produce a means (or interval) plot using Minitab.
In the hypothetical greenhouse example there were six pots t
Homework Assignment 3
Stat 502 WD
Please submit ONE document to the Dropbox for Homework 3. This can be a Word document
(preferred) or a pdf file.
* Question 1 and 3 are to be done in SAS
* Question 2 is to be done in Mintab.
Your submission can include c
Homework Assignment for Lesson 4
Please submit ONE document to the Dropbox for Homework 4. This can be a Word document
(preferred) or a pdf file. NOTE: For Question 1 and 2, which require use of statistical
software, at least one analysis must be done in
Homework for Lesson 12
A study of recover of plants in Burned vs. Unburned areas involved repeated measruements of the same
plots over a 15 month period. The floral count data, in stacked format, is in the Excel file Flora.xlsx and
is also shown below.
1)
Homework 10 Solutions
Answer Key
Stat 502
a) (40pts) Plot the data. This can be done any way you choose (Excel scatter plot, Minitab, or
SAS) to show the response (seed_yield vs. height). It is important here to label the points on the
scatter plot to ind
Homework Assignment for Lesson 7
Please submit one document file in the ANGEL dropbox.
1) (40 pts) Consider a 2 x 2 factorial treatment design administered in in a RCBD with 3 replications.
Using variables to reflect an experiment of your choice, draw out
Stat 502 Exam 1 Review Questions
1. (5 parts) Suppose a study was made of attendance of elementary, junior high, and senior high
school students for four ethnic groups (I, II, III, and IV). The study was balanced and included
n=24 students at each school
Minitab 17 Two-way ANOVA (Factorial) model specification
Toolbar Sequence:
Stat > ANOVA > General Linear Model > Fit General Linear Model
Fill in the Boxes for Responses and Factors:
And then click on the Model box (arrow above).
Highlight the first of th
To run a nested ANOVA in Mintab v. 17, use
Stat > ANOVA > General Linear Model > Fit general linear model. For the data below, considering Factor
B to be nested within the levels of Factor A,
We get the following prompt from the GLM procedure:
We specify
Homework Assignment for Lesson 6
Instructions: Please submit a single document (or pdf file) to the ANGEL dropbox for Lesson 6. You need
not complete these analyses with graphs or diagnostics. Just focus on specific questions asked.
1) (25 pts) A hospital
Homework Assignment for Lesson 7
Please submit one document file in the ANGEL dropbox.
1) (40 pts) Consider a 2 x 2 factorial treatment design administered in in a RCBD with 3 replications.
Using variables to reflect an experiment of your choice, draw out
Homework 2
*ImportantNote: these computations should be done by hand either with a simple calculator,
or using a spreadsheet like Excel. If using a spreadsheet, be sure to show the computations on
the worksheet and use adjacent cells to label the quantiti
Solutions for Exam 2 Review
Stat 502 Summer 2015
1. At the end of the school year in each of four randomly selected schools (S), two first-grade
classes (C) were randomly selected. Within each class, ten boys and ten girls (G for gender)
were randomly sel
Review for Exam 2 Stat 502 Summer 2015
1. At the end of the school year in each of four randomly selected schools (S), two first-grade
classes (C) were randomly selected. Within each class, ten boys and ten girls (G for gender)
were randomly selected, hal
Stat 502 Solutions for Review for Exam 1
1. Suppose a study was made of attendance of elementary, junior high, and senior high school
students for four ethnic groups (I, II, III, and IV). The study was balanced and included n=24
students at each school le
Stat 502 Homework 2 Solutions
1.
a. Some things seen in the dotplot are:
Values are generally higher for Brand 5.
Brand 2 has odd variation
Aside from Brand 2, the variation is about the same for all brands.
b. The ANOVA is shown below. We reject the null
Stat 502 Homework 3 Solutions
1. a.
n = 21 per group. Use Minitab's power calculator.
b. (i) Power = .7438. Use Minitab's power calculator.
(ii) Power = .9496
Notice that as = level of significance increases, the power also increases. The use of a higher
Stat 502 Homework 4 Solutions
1.
a. Several difficulties are present. There is nonconstant variance, the residuals are not normal, and there
may be two outliers.
b. A log transformation works well. It doesnt matter whether base 10 or the natural log is us
Stat 502 Homework 5 Solutions
1.
a. Results from Minitabs General Linear Model:
Source
Day
Method
Day*Method
Error
Total
DF
3
1
3
8
15
Seq SS
431.44
329.42
184.83
115.34
1061.04
Adj SS
431.44
329.42
184.83
115.34
Adj MS
143.81
329.42
61.61
14.42
F
2.33
5.