Intermediate Biostatistics
Spring 2016, Homework 7
Due: April 21, 2016
1. The table below includes weights (in kilograms) of poplar trees given different
treatments. This is the same example that we used from class.
Weights of
Poplar Trees
Treatment
None

Intermediate Biostatistics for Public Health Sciences
Homework 6 Solutions, Spring 2016
Please write all homework solutions neatly, and circle/box your final answers. Do not write
solutions on this assignment sheet.
1. Gestational age is often used to hel

Name: _
BIOS 3000: Intermediate Biostatistics
Spring 2016, Homework 1
1. The following table contains demographic information about study participants in a
clinical trial to test the efficacy of FTC-TDF at preventing HIV infection in heterosexual
adults i

Intermediate Biostatistics for Public Health Sciences
Homework 5 Solutions, Spring 2016
Please write all homework solutions neatly, and circle/box your final answers. Do not write
solutions on this assignment sheet.
1. You will find the results of physica

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015, Practice Test 2
1. Oysters are categorized for retail as small, medium, or large based on their volume. The grading
process is slow and expensive when done by hand. A computer reconstruction of oyst

Categorical Data Analysis
Data
on two categorical variables are typically
presented in a tabular format known as a
contingency table, or two-way table.
Rows represent the categories of one variable
Columns represent the categories of the other
variable.

Intermediate Biostatistics
Spring 2016, Homework Assignment 7
Due date: Thursday, April 14
Recall the basketball activity from class on April 7, 2016. The outcome of interest was whether
the shot was made or missed. The variables that were considered to p

Intermediate Biostatistics for Public Health Sciences
Homework 6, Spring 2016
Due: March 24, 2016
Please write all homework solutions neatly, and circle/box your final answers. Do not write
solutions on this assignment sheet.
1. Gestational age is often u

Intermediate Biostatistics
Spring 2016, Homework Assignment 7
Due date: Thursday, April 14
Recall the basketball activity from class on April 7, 2016. The outcome of interest was whether
the shot was made or missed. The variables that were considered to p

Name: _
BIOS 3000: Intermediate Biostatistics for Public Health Sciences
Practice Test 1
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AN EXPLAIN ALL REASONING.
FOR MULTIPLE CHOICE QUESTIONS, MAKE SURE YOU ONLY SELECT ONE OPTION.
1. The following data come from

Comparison of Two Means
We already know how to compare the
means of two populations.
Typical hypotheses:
vs.
Paired t-test
Independent samples t-test
Comparison of Two Means
Studies dont always compare just two
groups
We need a method for comparing an

Name: _
BIOS 3000: Intermediate Biostatistics for Public Health Sciences
Practice Test 1 Solutions
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AN EXPLAIN ALL REASONING.
FOR MULTIPLE CHOICE QUESTIONS, MAKE SURE YOU ONLY SELECT ONE OPTION.
1. The following data

Samples and Observational Studies
Data are collected to help us understand
phenomena or answer scientific questions.
Often want to learn about the relationship
between an explanatory variable and
response variable.
A response variable (dependent variabl

Scatter Plots and Correlation
In this section, we will begin to study the
relationships between continuous
variables.
One way to measure an association is
correlation analysis.
Correlation: The quantification of the degree
to which two random variables

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015
Practice Final Exam
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AND EXPLAIN ALL REASONING.
1. A field trial was conducted by the National Foundation for Infantile Paralysis (NFIP) in 1954
to evaluate the

Multiple Linear Regression
If knowing the value of a single explanatory
variable improves our ability to predict the
response, additional explanatory variables
could be used to our advantage.
A response variable may depend on a
predictor variable but, a

Motivating Example
Example
A study was conducted investigating the
relationship between smoking and aortic
stenosis (a narrowing or stricture of the
aorta that impedes the flow of blood to the
body). Since gender is associated with both
of these variable

Intermediate Biostatistics
Homework Assignment 3
Due date: February 9, 2016
1. The tables below displays data from a case-control study on smoking and invasive
cervical cancer with data stratified by number of sexual partners.
0-1 Partners
Smoker
Non-smok

Department of Epidemiology and Biostatistics
The University of Georgia
BIOS 3000 - Intermediate Biostatistics
Spring 2016
Course Information
Instructor: Kyle Turner
Office: B.S. Miller Hall, Health Sciences Campus, Room 219
Email: kturner2@uga.edu
Teachin

Survival Analysis
Sometimes, the response variable of interest is the
amount of time from an initial observation until the
occurrence of subsequent event.
The time interval between a starting point and a
subsequent event (often called a failure) is known

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015, Practice Test 3
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AND EXPLAIN ALL REASONING.
1. Previously, we used the Mantel-Haenszel method to investigate the association between
smoking (smoke=1 if smoker

Intermediate Biostatistics
Spring 2016, Homework 8 Solutions
1. The table below includes weights (in kilograms) of poplar trees given different
treatments. This is the same example that we used from class.
Weights of
Poplar Trees
Treatment
None
Fertilizer

Name: _
BIOS 3000: Intermediate Biostatistics
Spring 2016, Practice Test 3 Solutions
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AND EXPLAIN ALL REASONING.
1. Previously, we used the Mantel-Haenszel method to investigate the association between
smoking (smoke

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015, Practice Test 2
1. Oysters are categorized for retail as small, medium, or large based on their volume. The grading
process is slow and expensive when done by hand. A computer reconstruction of oyst

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015
Practice Final Exam
FOR FULL CREDIT, YOU MUST SHOW ALL WORK AND EXPLAIN ALL REASONING.
1. A field trial was conducted by the National Foundation for Infantile Paralysis (NFIP) in 1954
to evaluate the

Intermediate Biostatistics for Public Health Sciences
Homework 5, Spring 2016
Due: March 17, 2016
Please write all homework solutions neatly, and circle/box your final answers. Do not write
solutions on this assignment sheet.
1. You will find the results

Logistic Regression
So far, we have used linear regression
analysis when the response variable was
continuous.
Linear regression is capable of handling
binary variables as predictors, but not as
the response.
There are many situations where the
response

Name: _
BIOS 3000: Intermediate Biostatistics
Fall 2015, Homework 2 Solutions
1. In parts a. through i., use the data in the accompanying table (based on data from Pfizer, Inc.). That table
describes results from a clinical trial of the well-known drug Vi

Elementary Biostatistics - Computer Lab 1
READ THE ASSIGNMENT SHEET VERY WELL BEFORE ASKING A QUESTION!
1. The purpose of this problem is to input a small dataset into Stata, and carry out a simple
analysis. The data are serum-cholesterol levels (mg/dL) f

Logistic Regression
So far, we have used linear regression
analysis when the response variable was
continuous.
Linear regression is capable of handling
binary variables as predictors, but not as
the response.
There are many situations where the
response