Biostat 310
Winter 2018
Homework 2
Total Points: 10 points
There are a total of 8 graded points (questions indicated by *) and then an additional 2 points
in total for the additional questions without
Biostat 310
Spring 2017
Homework 1 - Solutions
Total Points: 15 points
There is a total of 10 graded points (questions indicated by *) and then an additional 5 points
in total for the additiona
Biostat 310
Winter 2018
Homework 4
Total Points: 10 points
There are a total of 8 graded points (questions indicated by *) and then an additional 2 points
in total for the additional questions without
Rachel Lee
Student ID: 1331935
January 26, 2016
Homework #3
1. * Answer: b) A cohort study
2. * Answer: b) The comparison of outcome between treatment and control groups
is likely confounded by other
Biostat 310
Homework 1
Submit to the CANVAS course website
DUE: 10/9/15, 11:30am
TOTAL: 15 POINTS
There are a total of 13 graded points (questions indicated by *) and then an additional 2 points in to
Biostat 310
Homework 2
Submit to the CANVAS course website
DUE: 10/16/15, 11:30am
[15 points]
There are a total of 13 graded points (questions indicated by *) and then an additional 2
points in total
Biostat 310
Homework 3
Submit to the CANVAS course website
DUE: 10/23/15, 11:30am
[15 points]
There are a total of 13 graded points (questions indicated by *) and then an additional 2 points in total
Biostat 310
Homework 8
Submit to the CANVAS course website
DUE: 12/11/15, 11:30am
[14 points]
There are a total of 12 graded points (questions indicated by *) and then an additional 2 points in total
Practice Problems:
1. A study enrolled 240 non-smokers with lung cancer and 260 non-smoking controls. The
investigators then determined whether each participant had been exposed to the cigarette
smoke
Review for BIOST 310 Final
1
Topics covered since Midterm II
CLT; Sampling Distribution and Confidence
Interval for
Hypothesis testing (H0 and HA, , Type I and
Type II error, P-value, power, sample
Biostat 310
Homework 4
Submit to the CANVAS course website
DUE: 10/30/15, 11:30am
[14 points]
There are a total of 12 graded points (questions indicated by *) and then an additional 2 points in total
Biostat 310
Homework 5
Submit to the CANVAS course website
DUE:11/06/15, 11:30am
[14 points]
There are a total of 12 graded points (questions indicated by *) and then an additional 2 points in total f
Biostat 310
Homework 7
Submit to the CANVAS course website
DUE:12/04/15, 11:30am
[15 points]
There are a total of 13 graded points (questions indicated by *) and then an additional 2 points in total f
Biostat 310
Homework 6
Submit to the CANVAS course website
DUE:11/13/15, 11:30am
[15 points]
There are a total of 13 graded points (questions indicated by *) and then an additional 2 points in total f
Biostat 310
Fall 2017
Homework 5 - Solutions
Total Points: 15 points
There is a total of 10 graded points (questions indicated by *) and then an additional 5 points
in total for the additional
Biostat 310
Fall 2017
Homework 7 - Solutions
Total Points: 15 points
There is a total of 10 graded points (questions indicated by *) and then an additional 5 points
in total for the additional
Biostatistics 310
Midterm Exam 2
Fall 2017
SOLUTION KEY 17 POINTS
Name: _
Make sure you show your work (i.e., formulas) for questions that involve calculations!
You may leave expressions
Cin Yu Hsieh
Biostatistics 310
Term Paper
Your Hardcore Run May Be as Dangerous as Sitting Around Doing Nothing, is a news report
aiming to summarize the potential findings of a longitudinal cohort st
Biostat 310
Winter 2018 Homework 4
Resham Puri
12:30 Section
1.
2.
3.
a. The 55% is a statistic, because it is being measured from a sample group vs. an
entire population.
b. Point estimate: 55%
Inter
Biostat 310
Winter 2018 Homework 6
Resham Puri
12:30 Section
1.
a. False
b. True
c. True
d. False
e. True
2. B, because the p-value determines the probability that the data is at least as extreme
as t
Biostat 310
Winter 2018 Homework 5
Resham Puri
12:30 Section
1.
a. 0.1488
b. 0.1488 + 0.0331 + 0.0046 + 0.0004 + 0.0000 + 0.0000 + 0.0000 = 0.1823, you get
this number when adding the probabilities of
Homework 3:
1. Prevalence
2. A.
Ratio
16.9/19.3
10.8/14.8
7.5/11.2
2.3/3.2
Change
2.4%
4%
3.7%
1%
B. The 30-44 Year age group had the biggest increase in prevalence
C.
Number of high- risk drinkers
20
Did Mendel Fake his Data?
Ronald A Fisher
Gregor Mendel
Winter 2016
Biostat 310
1
The Controversy
In 1866 Gregor Mendel wrote a paper reporting results
from experiments crossing various strains of pe
Body Fat Measurement
Winter 2016
Biostat 310
1
Correlation
80
100
120
Hip circumference (cm)
140
160
A scatterplot can be used to display the relationship between
two quantitative measures
The corre
Review: Hypothesis Testing Steps
1.
Specify the significance level of the test,
2.
State the scientific question
3.
Convert the scientific question into statistical hypotheses (null and
alternative)
Prevention of Mother to Child
Transmission of HIV
Winter 2016
Biostat 310
1
HIV and PMTCT
An (untreated) HIV-infected pregnant woman has a
20-40% chance of infecting her infant in utero or
during bir
HIV and Circumcision
Winter 2016
Biostat 310
0
Winter 2016
Biostat 310
1
Winter 2016
Biostat 310
2
Case Reports
Describe characteristics of a few individual patients
Often, the first description of
Rachel Lee
Student ID: 1331935
BIOST 310 AA
Homework 2
1. a) Prevalence of HIV+ = 61/475 = 0.1284 or 12.84%
Prevalence of IVDU = 136/475 = 0.2863 or 28.63%
b) Prevalence of HIV+ without IVDU = 27/88 =
Biostatistics for the
Health Sciences
(Biostatistics 310)
Instructor: Lyndia Brumback
Cartoons and images in these notes are from
Gonick L. Cartoon Guide to Statistics. HarperPerennial, New York, 1993
Rachel Lee
ID #: 1331935
BIOST 310 AA
Homework #4
1.
a) 40/318 = 0.13
b) Left: 10/48 = 0.21, Right: 30/270 = 0.11
These two probabilities are different.
c) 278/318 = 0.87
d) 30/220 = 0.14
e) 18/48 = 0
Biostatistics 310
Midterm Exam 1
Fall 2017
SOLUTION KEY 18 POINTS
Name: _
Make sure you show your work (i.e., formulas) for questions that involve calculations!
You may leave expressions u
Biostat 310
Fall 2017
Homework 3 - Solutions
Total Points: 15 points
There is a total of 10 graded points (questions indicated by *) and then an additional 5 points
in total for the additional
Biostat 310 Homework 2
1. Answers below.
a. P(A) = 50 NYHA IV/500 total = 1/10 or 0.10
b. Yes. The probability of having NYHA IV differ between patients aged <40 years
and aged >40 years. For patients