Week 9 and 10 assignment
1. How many types of correlation depending on its extent and direction?
There types:
1-Positive Correlation ( when values of one variable increase with the increase in another variable)
2. Negative Correlation(if the values of one
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UNIVERSITEIT VAN PRETORIA
FAKULTEIT GESONDHEIDSWETENSKAPPE
UNIVERSITY OF PRETORIA
FACULTY OF HEALTH SCIENCES
SCHOOL OF HEALTH SYSTEMS AND PUBLIC
HEALTH
SKOOL VIR GESONDHEIDSSTELSELS EN
OPENBARE GESONDHEID
MPH
PHM 872
1.
Compose a Word document that answers the
following questions:
Hair color, gender and birthplace are all
examples of (_) variables.
Qualitative variables
A Geiger counter measures the number of
particles emitted by a radioactive element in counts
per mi
Q1
(H0) =
The noticed or observation which is built on uncertain hypothesis. It is
contain (, , =) and that chance is responsible for the outcomes.
"There is no relationship between 2 measured phenomena"(1) it is
hypothesis of "no difference
Q2
Pivotal is
1.
Compose a Word document that answers the
following questions:
Hair color, gender and birthplace are all
examples of (_) variables.
Qualitative variables
A Geiger counter measures the number of
particles emitted by a radioactive element in counts
per mi
1.
Why choose
research?
biostatistics
over
statistics
for
biomedical
1. It employ (use) statistical methods greatly on biostatistics
(applied statistics).
2. It could graphic examples from biological, medical, and health
care areas and helps you to know h
Exam
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
the question.
Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most
appropriate.
1)
Amount of fat (in grams) in coo
Q1
A parameter
Q2
The statistic
Q3
It is prediction based on experience. In fact, estimation is the rule of
thumb of the value or information available at the time and it is the
same as an educated guess (Approximate calculations) of the study
Q4
It is th
1) Define null hypothesis.
Answer: An observation that is based on an unproven theory
2) Theoretical statistics often model pivotal variables. Define a pivotal
variable/
Answer: When a distribution is fixed a pivotal variable is the function of
statistics
The following are the Equations you should know:
1. Probability of type I error
A type I error occurs when one rejects the null hypothesis when it is true. The
probability of a type I error is the level of significance of the test of hypothesis,
and is de
PHC-210 Midterm Study Guide
1) Define descriptive statistics, inferential statistics, and biostatistics?
Descriptive statistics:
It is includes a variable and a sample.
A variable is a quantity that may vary from object to object, and it has two types.
A
Exam
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the quest
Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
1) at each
1) An education researcher
Week2
. Kareema Sayed
.130078427
1.Why choose biostatistics over statistics for biomedical research?
Biostatics allows to help us maintain motivation, use methods of statics to
identification of the technique required to answer a biological question.
2. H
Week 13
.Kareema Sayed
.130078427
Questions 17: For each numbered situation below, select the most
appropriate measure from the following lettered options. Each
lettered option can be used once, more than once, or not at all.
A. Five-year survival
B. Prev
Week14
.Kareema Sayed
.130078427
A population-based evaluation was conducted in Japan of annual
screening for lung cancer with low-dose computed tomography. The
subjects underwent baseline evaluations in 1996, with repeat annual
examinations the next two
.Assignment 4-1
.Kareema Sayed
.130078427
1/ The population of a clinical study of Americans with diabetes is
considered to be the collection of blood sugar levels of ALL Americans. The
average blood sugar level for the population is called the (parameter
.Kareema Sayed
.130078427
? What is the Chi-Square Test
A measurement of how expectations compare to results.
The data used in calculating a chi- square statistic must be
random, raw, mutually exclusive, drawn from independent
variables and be drawn from
.Kareema Sayed
.130078427
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
insurance is an example of (Binomial data).
Use the binomial coefficient to deter
Kareema Murtaza Sayed.
130078427.
Assignment 3-1
1. Compose a Word document that answers the following questions:
* Hair color, gender and birthplace are all examples of (Qualitative) variables.
* Geiger counter measures the number of particles emitted by
Week 10
.Kareema Sayed
.130078427
1.Using the following equation and table, compose a Word document that answers the
following questions:
Equation 1
X
1.00
Y
1.00
y = 0 + iXi + I
2.00
2.00
Table 1
3.00
1.50
4.00
3.65
5.00
2.25
2.How would you describe the
Week 11
.Kareema Sayed
.130078427
1.How would you define Incidence Rate?
Rate displays number of the new cases of disease, which diagnosed
during specific period.
2.A doctors office gives each patient a survey to complete. The results
of the survey reveal
Week 12
Kareema Sayed
.130078427
For each numbered situation below, select the most appropriate
term from the following lettered options. Each option can be
used once, more than once, or not at all.
Persons with fever/headache were ten times more likely
Week 5
Kareema Sayed.
130078427.
Define null hypothesis.
Specifies a hypothesized real value, or values, for parameter.
Theoretical statistics often model pivotal variables. Define a pivotal variable.
Objective of theoretical statistics to develop pivotal
Week 9
.Kareema Sayed
.130078427
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?
Is a non-parametric test in which tw
Anwar almazrou
130043217
o Using the following equation and table, compose a Word document that answers the following
questions:
Equation 1
y = 0 + iXi + I
Table 1
X
Y
1.00
1.00
2.00
2.00
3.00
1.50
4.00
3.65
5.00
2.25
o How would you describe the function
BEFOUR MEDTERM EXAM
CHAPTER 1
Biostatistics
the definition of biostatistics is
the study of statistics as applied to biological areas.
What is the field of statistics?
Parents of a child with a genetic disorder consider whether or not they should
have ano
Chapter 4
Statistical Inference: Populations and Samples
: A parameter is a numerical characteristic of a population
Valid Inference Through Probability Theory
Two outcomes are statistically independent if the probability of their joint occurrence
is the
PHC-210 Midterm Study Guide
1)
Define descriptive statistics, inferential statistics, and biostatistics?
Descriptive statistics:
It is includes a variable and a sample.
A variable is a quantity that may vary from object to object, and it has two types.
A