Nuha AL Fadhli
130028818
Week 5: One and Two-Sample Inference
Q1-Define null hypothesis ?
- A null hypothesis specifies a hypothesized real value, or values, for a parameter .
1. The null hypothesis is denoted by H0 the alternative hypothesis by H
and usu
Nuha AL Fadhli
130028818
[Introduction to Biostatistics] - [Biostatistical Design of Medical Studies ]
1
Assignment: 2-1
Compose a Word document that answers the following questions:
Why choose biostatistics over statistics for biomedical research?
Ther
Hypothesis Testing: Part I
PHC 210: Biostatistics and
Epidemiology
Hypothesis Testing: Part I
Classical Approach and P-Value Approach
Classical Approach
State Ho and Ha.
Check requirements.
Random sample?
State what dist
State , and:
State the Rejectio
1
Assignment 7 1
Nuha AL Fadhli -130028818
1. What is the Chi-Square Test?
Statistical test specific hypothesis where observed data they are compared to the
expected data .
The Chi-Square Test examines the (null hypothesis) which essentially states that
Test Validity
PHC 210: Biostatistics and
Epidemiology
Test Validity
Test Validity
Validity of diagnostic and screening test
Measurements of sensitivity and specificity
Predictive value
Reliability and repeatability
PHC 210: Biostatistics and
Epidemiol
2 Tests: Test of
Independence of Two
Variables
PHC 210: Biostatistics and
Epidemiology
2 Tests
Test of Independence of Two Variables
Example: A USA Today poll collected this data. Is religious service
attendance independent of age?
Given:
PHC 210: Biost
Assignment 6 1
Nuha AL Fadhli
130028818
Compose a Word document that answers the following questions:
One of the goals of the Obama administration is to ensure all Americans have health insurance. A survey to
determine how many Americans have health ins
Nuha AL fadhli
130028818
Week 4: Statistical Inference - Populations and Samples
1
Compose a Word document that answers the following questions:
The population of a clinical study of Americans with diabetes is considered to be the
collection of blood su
Salem Alsuhaymi 120008898
1
Assignment #6
Dr. Goel
1. What is the Chi-Square Test?
statistical test specific hypothesis where observed data they are compared to the
expected data
2. The Chi-Square Test examines the (_) which essentially states that the di
How would you define the Wilcoxon Signed Rank Test?
It allows you to use information from paired replicates to test a null
hypothesis.
How would you define the Mann-Whitney Statistic?
It is a non-parametric test in which two groups or conditions are com
1. Define null hypothesis.
An observation that is based on an unproven theory.
2. Theoretical statistics often model pivotal variables. Define a pivotal variable.
Is a function of statistics and parameters having the same fixed distribution (usually tabul
Why choose biostatistics over statistics for biomedical research?
Collecting, analyzing, and interpreting data are necessary components of biomedical research
and need biostatistics. Doing various statistical tests has been made easy by sophisticated
com
What is the Chi-Square Test?
A statistical test for a specific hypothesis where observed data is compared to expected data
2) The Chi-Square Test examines the (_) which essentially states that the difference between
the observed and the expected result is
Chapter 2
Epidemiologic Measures
Epidemiologic Measures
Clinical Background
Growth factors
Stimulates the patients ability to produce
replacement neutrophils
Empiric treatment
Selection of regimen of antibiotic treatment on the
basis of likely infecti
Chapter 6
Diagnostic Testing
Diagnostic Testing
Clinical Reasoning
From the text, clinical decision making as described by
Sir William Osler in 1921
The problems of disease are more complicated and difficult than
any others with which the trained mind has
Chapter 5
Communication
Communication
Communication is essential not only in informing
people about health concerns and in maintaining
important health issues on the agenda.
Communication is the process that takes place if
people or groups interact with
Interval Estimation
PHC 210: Biostatistics and
Epidemiology
Interval Estimation
PHC 210: Biostatistics and
Epidemiology
Interval Estimation
Confidence Interval: Example
A sample of size 9 test scores from a standardized test. The sample has
a mean of 433
Chapter 7
Categorical Data: Contingency Tables
Categorical Data: Contingency Tables
Two-Way Contingency Tables
According to the text:
Let two or more discrete variables be measured on
each unit in an experiment or observational study. In
most of the chap
Correlation
PHC 210: Biostatistics and
Epidemiology
Correlation
Finding the Correlation
You will need the data in two lists of the calculator.
This is paired data (by location and in 1000):
(Student population, quarterly sales)
(2, 58) (6, 105) (8, 88)
Chapter 6
Counting Data
Counting Data
Binomial Random Variables
Recognizing binomial random variables
Four conditions characterize binomial data:
A response or trait on one and only one of two
possibilities. This response is a binary
response.
The res
PHC-210: Week 10
Association and
Prediction: Linear
Models with One
Predictor Variable
Association and Predictor: Linear Models
with One Predictor Variable
Introduction
According to the text:
Definition 9.1: When two variables are collected from
each data
Chapter 15
Rates and Proportions
Rates and Proportions
Rates, Incidence, and Prevalence
Rate refers to the amount of change occurring in a
quantity with respect to time.
Rate refers to the amount of change in a variable over
a specified time interval di
Chapter 1
Introduction to Epidemiology
Introduction to Epidemiology
Introduction
According to the text, the definition of epidemiology is
focuses on the distribution and determinants of disease
frequency in human populations.
Epidemiologists examine patte