Two things are infinite, the universe and human stupidity, and I am not yet completely sure
about the universe. -Albert Einstein
Ways that bias can be introduced into your study:
Bias is more difficult to control in situations such as
Statistics 100 Spring 2013
Change in weight was observed in 14 patients (SEM group) being seen at a local cardiac
rehabilitation center. The patients were advised to exercise and reduce their caloric intake.
They were asked to parti
Stat 100 Homework 2 Solutions
There are two ways to test positive. A true positive happens with
probability (0.1)(0.92) = 0.092. A false positive happens with probability
(0.9)(0.06) = 0.054.
Thus, Prcfw_test positive =0 .092 + 0
Chapter 3 Homework
1. Suppose that a medical test has a 92% chance of detecting a disease if the person has it (i.e.
92% sensitivity) and a 94% chance of correctly indicating that the disease is absent if the person
really does not have the disease (i.e.
Statistics 100B Spring 2013
Change in diastolic blood pressure was observed in 18 patients being seen at a local
medical oce for hypertension. The patients were advised to exercise and reduce their
weight. A group of 9 sedentary b
Suspicious Conclusions and Junk Science
Bras and Breast Cancer: Does Wearing a Bra Increase the Risk of Breast Cancer?
An examination of Dressed to Kill (Sidney Ross Singer and Soma Grismeijer, 2005)
Two examples in mass media, or journal articles, that the conclusion is
Brain Changes in College Football Players Raise New Concerns
By GRETCHEN REYNOLDS
MAY 21, 2014 12:01 AM (The New York Times PHYS ED)
(a) A brief statemen
Yi Su 912509181
What is counterintuitive?
Our daily life is always filled with a wide variety of data, where some inherent
laws exist. Benfords Law is a law revealing the distribution of the first digits
(not including zero) in many
(2) Two examples in mass media, or journal articles, that the conclusion is
It is a comparison about different physical
Question #1: Two examples in mass media, or journal articles, that the conclusion is
Example #1: http:/www.foxnews.com/health/2014/05/27/stressful-relationshipsmay-raise-risk-death/
Little is known about the health conseq
Q1 median Q3 max n
-1.27 10.34 -17 -10.75
normal 0.54 9.60 -14 -7.00
No, the quartiles and medians for both hypertension and normal tension are very similar.
Therefore, it is reasonable to conclude t
The non-scientist in the street probably has a clearer notion of physics, chemistry and biology
than of statistics, regarding statisticians as numerical philatelists, mere collector of numbers.
Stephen Senn, Dicing with Death: Chance, Risk and H
HIV infection and AIDS
Human Immunodeciency Virus!
VM 128 Animal Virology: Lecture 2
Definition of virus
Basic methods in virology
Reading: Chapter 2 pages: 26-49, and Chapter 4
Flint et al
Definition of virus (Latin: poison)
VM 128 Animal Virology: Lecture 3
Overview of the virus life cycle
Genome replication and mRNA production
Assembly and exit of progeny virions.
Reading: Chapters 5, 12 and 13 Flint et al
Overview of the virus (
Introduction to Probability and Statistics
Probability & Statistics for Engineers & Scientists, 8th Ed.
Instructor: Kuo-Jung Lee
TA: Brian Shea
The pdf file for this class is available on the class web page.
Stat 100 Solution to HW #1
2.3.1 Any sample with sum 100, and observations not all equal.
Multiple answers possible. Example: 10, 14, 15, 26, 35
Mean is 6.4. Median is 6.3.
Stat 100 Homework 4 solutions
(c) The nondirectional alternative (part (a) is more appropriate. According to the
narrative, the researchers formulated the directional alternative in part (b) after they had
seen the d
Assignment, Topic 2
Two examples in mass media, or journal articles, that the conclusion is suspicious/wrong.
1. NBC Meet the Press interview with Texas Governor Rick Perry to talk death penalty,
the economy and his possible pr