BIOSTATS 640 Intermediate Biostatistics Biostatistics and Epidemiology UMass Amherst

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For Students

1. Review of BIOSTATS 540
2. Discrete Distributions

3. Introduction to Nonparametrics

4. Categorical Data Analysis

5. Normal Theory Regression
6. Analysis of Variance

7. Logistic Regression
8. Introduction to Survival Analysis
9. (Time permitting) Introduction to Mixed Models

Assignments (Homeworks and Exams)

Scroll down for (1) Homeworks and Solutions (2) Data sets and (3) Exams and Solutions (by email request ONLY)

Homeworks

Week Topic Assigned Due Exercises Solutions
1
HW #1
1. Review of BIOSTATS 540
2/1/2021
EXTENDED
Monday
2/15/2021
Questions (pdf, 5 pp)
R Users
BIOSTATS640_hw01_q2.Rdata

Stata Users
BIOSTATS640_hw01_q2.dta

BIOSTATS640_hw01_q2.xlsx

SOLUTIONS
R Users
(pdf, 13 pp)

STATA Users
(pdf, 13 pp)

2 HW #2
2. Discrete Distributions
2/7/2021
Friday
2/19/2021
Questions
(pdf, 1 pp)

SOLUTIONS
R Users
(pdf, 5 pp)

STATA Users
(pdf, 3 pp)

3 HW #3
3. Introduction to Nonparametrics
2/14/2021
Friday
2/26/2021
Questions
(pdf, 2 pp)

SOLUTIONS
R Users
(pdf, 6 pp)

Stata Users
(pdf, 8 pp)

4
HW #4
4. Categorical Data Analysis
2/24/2021
Friday
3/12/2021
Questions
(pdf, 4 pp)

Stata Users

SOLUTIONS
R Users
(pdf, 11 pp)

STATA Users
(pdf, 14 pp)

5 HW #5
5. Regression & Correlation
3/8/2021
Friday
3/26/2021
Questions
(pdf, 6 pp)
R Users
hw_regression.Rdata
hersdata_small.Rdata

Stata Users
hw_regression.dta
hersdata_small.dta

SOLUTIONS
R Users
(pdf, 16 pp)

STATA Users
(pdf, 15 pp)

6 HW #6
6. Analysis of Variance
3/28/2021
Friday
4/16/2021

Questions (pdf, 5 pp)
R Users
anova_infants.Rdata
fishgrowth.Rdata

Stata Users
anova_infants.dta
fishgrowth.dta

Excel Datasets
anova_infants.csv
fishgrowth.csv

SOLUTIONS
R Users
(pdf, 13 pp)

STATA Users
(pdf, 12 pp)

7
HW #7
7. Logistic Regression
4/14/2021
Friday
4/30/2021

Questions (pdf, 4 pp)
R Users
depress.Rdata
illeetvilaine.Rdata

Stata Users
depress_small.dta
depress.dta
illeetvilaine.dta

SOLUTIONS
corrected 4/27/2021
R Users (pdf, 11 pp)

STATA Users
(pdf, 11 pp)

8
HW #8
8. Introduction to Survival Analysis
4/26/2021
OPTIONAL
full credit given
Questions
(pdf, 2 pp)

SOLUTIONS
R Users
(pdf, 10 pp)

STATA Users
(pdf, 11 pp)

Exams

Exam Topics Posting Date Due Date Questions Solutions
1 1. Review of BIOSTATS 540
2. Discrete Distributions
3. Introduction to Nonparametrics
2-22-2021 3-8-2021 Questions
(pdf, 14 pp)
Solutions
(by email request)
2 4. Categorical Data Analysis
5. Logistic Regression
3-29-2021 4-12-2021 Questions
(pdf, 15 pp)
Solutions
(by email request)
3 6. Analysis of Variance
7. Logistic Regression
8. Introduction to Survival Analysis
4-23-2021 5-7-2021 Questions
(pdf, 23 pp)
Solutions
(by email request)

 Copyright 2021 University of Massachusetts, Amherst. This is the course web site for BIOSTATS 640W, Biostatistics Program, Department of Biostatistics and Epidemiology. Produced and maintained by the School of Public Health and Health Sciences. Send comments or questions about this web site to cbigelow@schoolph.umass.edu. Page updated: April 27, 2021