Chapter 3: Association: Contingency, correlation and Regression
Goals
Contingency tables conditional proportions
To understand the
between 2 variables.
relationship Correlation, Regression
Cautions:
To distinguish between association
extrapolation,
caus

Review for Exam 2
MTH147
Midterm exam 2: November 16, 2016
Chapter 4: Gathering Data
1
Chapter 5 & 6: probability & probability distributions
A Phenomenon is random if individual outcomes are uncertain, but there is
nonetheless a regular distribution of o

Homework Assignment 5
MTH 147, section: .
Deadline date: November 14, 2016
Name:
CSUID:
Guidelines and remarks
The homework deadline will be strictly adhered to. A deduction of 15% per day will
result assignments turned in after the start of the class on

Homework Assignment 2
MTH 147, section: .
Deadline date: September 26, 2016
Name:
CSUID:
Question 1 The plasma beta-carotene level (concentration of beta-carotene in the blood), in
ng/ml, was measured for a sample of 315 individuals, and the results are s

Solution: Assignment 1, MTH 147
Deadline date: September 16, 2016
1. (5 points each) Identify each of the following variables as either categorical (C)
or quantitative (Q)
a. Choice of diet (vegetarian, non-vegetarian)
_c_
b. Time spent in previous month

Homework Assignment 2
MTH 147, section: .
Deadline date: September 26, 2016
Name:
CSUID:
Guidelines and remarks
The homework deadline will be strictly adhered to. A deduction of 15% per day will
result assignments turned in after the start of the class on

Homework Assignment 4
MTH 147, section: .
Deadline date: November 4, 2016
Name:
CSUID:
Guidelines and remarks
The homework deadline will be strictly adhered to. A deduction of 15% per day will
result assignments turned in after the start of the class on t

Solutions: Homework Assignment 4
MTH 147, section: .
1. Smokers may have a more difficult time quitting smoking if they live with another smoker.
Researchers perform an experiment to explore this possibility in a study to compare bupropion
with placebo. S

Homework Assignment 3
MTH 147, section: .
Deadline date: October 10, 2016
Name:
CSUID:
Guidelines and remarks
The homework deadline will be strictly adhered to. A deduction of 15% per day
will result assignments turned in after the start of the class on t

Homework Assignment 1, MTH 147
Deadline date: September 16, 2016
Name:
CSUID:
Guidelines and remarks
The homework deadline will be strictly adhered to. A deduction of 15% per day
will result assignments turned in after the start of the class on the due da

Solution: Homework Assignment 5
MTH 147, section: .
Deadline date: November 14, 2016
Multiple Choice questions
[B] 1. (20 points) The contingency table shows how many people wore (Y) and did not wear (N)
seat belts as well as how many survived (S) and die

Practice Problems for Exam 1
MTH 147
Ariadni Papana
These are some extra problems to help you prepare for Exam 1. These questions are NOT
comprehensive. In other words, do not rely solely on these questions to prepare for the exam!
I suggest that you also