Estimation and
Confidence Intervals
Estimators of population
Sample Mean is the best
parameters
X sum of
estimator for
n
i
X
i 1
n
values
n
n
Sample Proportion
is the best estimator of
p
X
i
i 1
n
W
The Problem
Expanding extinction of domestic and foreign
plants and animals
Economic Development & Population Growth
Lack of Concern
Is this a problem?
Extinction is natural
Adaptaiton/natural selecti
11.368 - Reaction Paper 4
I found the first two excerpts contained in the Rechtshaffen piece to be the most
interesting part of this week's reading. I think that the Anderton article is especially
mis
Question 1
Suppose that doctors must choose a level of care, x, for each of their patients. The cost of
such care is c(x) = 5x2 + 5. The benet of care (translated into dollars) is f (x) = 90x 10x2 .
S
Homework 1
Due 1/18/17 at 4:30pm
1. People with diabetes must monitor and control their blood glucose level. The goal is to maintain fasting
plasma glucose between 90 and 130 milligrams per deciliter
SAS Intro
Lab Problems
1
1. You want to create a shortened dataset from the original Frmgham data
file (under the SASintro library). In this shortened dataset, you want to
have only the following vari
Lab 3
Probability and Binomial Distribution
1
1. Jay-Z is a researcher at the CDC. He has been collecting data on adults
with different stages of throat cancer over the past year.
Disease Stage
II
III
Beijing, China
Beijing is Chinas political and cultural capital
A 3000 year old city; over 700 years as capital
Beijing is not located on a major river
Beijing - Demographics
City Population 10 mi
1
Measuring the Gains from Trade: Feyrer, 2009
Theory clearly predicts that trade increases national incomethat is, the bundle of goods
and services a country can purchase.
But this is a dicult hypo
Sampling Distributions
and Estimation
Statistics overview
We have sample from a study population of interest
Observe the data
Summarize the Data
We assume this sample is representative and can be used
Review SheetLecture 1
Population - is the complete collection to be studied, it contains all subjects of interest
Sample-is a part of the population of interest, a sub-collection selected from a popul
Probability: Formalizing
Probability
Earlier.
Probabilities were defined in terms of the outcomes that made up
the sample space of the experiment
To calculate probabilities about events we used elemen
Review Sheet for Lecture 2
Histograms, Bar Charts and Pie chart are all ways to graphically display a variables
distribution.
Histogram is used for quantitative variables. Area should be proportional
Statistics is
Statistics
is the science of learning from data,
and of measuring, controlling, and
communicating uncertainty; and it thereby
provides the navigation essential for controlling
the cours
Introduction
PH 7017 Fundamentals of Biostatistics I
"
Statistics is
Statistics is the science of learning from
data, and of measuring, controlling, and
communicating uncertainty; and it thereby
provi
What are the nancial consequences of a continued failure to take advantage of
cash discount opportunities in the payment of accounts payable?
If the discounts are continuously missed they will be give
Definitions of Access to Care
The timely use of personal health services to achieve the best
possible health outcomes (IOM, 1993)
Those dimensions which describe the potential and actual
entry of a gi
Lab 1 Descriptive Statistics
1
A health psychologist is interested in adult American levels of vigorous physical activity.
She randomly surveyed 15 adults and recorded the number of hours of vigorous