This document discusses hypotheses in research. It defines a hypothesis as a tentative statement about the relationship between two or more variables. Constructing a hypothesis brings clarity and focus to a research problem by specifying what information to collect. There are different types of hypotheses, including research hypotheses, alternative hypotheses, null hypotheses, and hypotheses of difference or association. When testing a hypothesis, it is important to have a valid study design, sampling, data collection, and analysis to avoid making incorrect conclusions and committing Type I or Type II errors. Hypothesis construction is less emphasized in qualitative research due to its non-specific approach.
Inductive and Deductive Approach to Research. Difference between Inductive an...Rohan Byanjankar
What is inductive and Deductive Approach to Research? The difference between Inductive and Deductive Reasoning to Research with clear example, figure and some major differences between them.
This PPT slide presentation deals with the Meaning of hypothesis, Types of hypothesis, Parameters of a good hypothesis, Importance of hypothesis, Source of hypothesis, Format of hypotheis & Formulation of testable hypothesis.
Inductive and Deductive Approach to Research. Difference between Inductive an...Rohan Byanjankar
What is inductive and Deductive Approach to Research? The difference between Inductive and Deductive Reasoning to Research with clear example, figure and some major differences between them.
This PPT slide presentation deals with the Meaning of hypothesis, Types of hypothesis, Parameters of a good hypothesis, Importance of hypothesis, Source of hypothesis, Format of hypotheis & Formulation of testable hypothesis.
Ethnography is a Social science research method. It is the primary data collection method. It is mainly combined with social background. A qualitative approach that studies the cultural patterns and perspectives of participants in their natural setting.
Ethnography came from Greek, it identifies its roots in sociology and anthropology.
*Ethnos = People
*Graphing = Writing
“Ethnography literally means ‘a portrait of a people’. Ethnography is a written description of a particular culture, the custom, belief and behaviour based on information collected through field work.” (Harris and Johnson 2000).
Theory building, What Is a Theory? , What Are the Goals of Theory?, Research Concepts, Constructs, Propositions, Variables, and Hypotheses, Research Concepts and Constructs, Research Propositions and Hypotheses, Understanding Theory, Verifying Theory, Theory Building, The Scientific Method
OBJECTIVITY IN SOCIAL SCIENCE RESEARCH Ruby Med Plus
Objectivity is considered as an ideal for scientific inquiry, as a good reason for valuing scientific knowledge, and as the foundation of the authority of science in society. It expresses the thought that the claims, methods and results of science are not, or should not be influenced by particular perspectives, value commitments, community bias or personal interests, to name a few significant factors. Scientific objectivity is a feature of scientific claims, methods and results.
I’m a young Pakistani Blogger, Academic Writer, Freelancer, Quaidian & MPhil Scholar, Quote Lover, Co-Founder at Essar Student Fund & Blueprism Academia, belonging from Mehdiabad, Skardu, Gilgit Baltistan, Pakistan.
I am an academic writer & freelancer! I can work on Research Paper, Thesis Writing, Academic Research, Research Project, Proposals, Assignments, Business Plans, and Case study research.
Expertise:
Management Sciences, Business Management, Marketing, HRM, Banking, Business Marketing, Corporate Finance, International Business Management
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WTAMU Communication Research Methods
Source: The Selection of a Research Approach in "Research Design:Qualitative, Quantitative, and Mixed Methods Approaches" by John W. Creswell (2014).
Ethnography is a Social science research method. It is the primary data collection method. It is mainly combined with social background. A qualitative approach that studies the cultural patterns and perspectives of participants in their natural setting.
Ethnography came from Greek, it identifies its roots in sociology and anthropology.
*Ethnos = People
*Graphing = Writing
“Ethnography literally means ‘a portrait of a people’. Ethnography is a written description of a particular culture, the custom, belief and behaviour based on information collected through field work.” (Harris and Johnson 2000).
Theory building, What Is a Theory? , What Are the Goals of Theory?, Research Concepts, Constructs, Propositions, Variables, and Hypotheses, Research Concepts and Constructs, Research Propositions and Hypotheses, Understanding Theory, Verifying Theory, Theory Building, The Scientific Method
OBJECTIVITY IN SOCIAL SCIENCE RESEARCH Ruby Med Plus
Objectivity is considered as an ideal for scientific inquiry, as a good reason for valuing scientific knowledge, and as the foundation of the authority of science in society. It expresses the thought that the claims, methods and results of science are not, or should not be influenced by particular perspectives, value commitments, community bias or personal interests, to name a few significant factors. Scientific objectivity is a feature of scientific claims, methods and results.
I’m a young Pakistani Blogger, Academic Writer, Freelancer, Quaidian & MPhil Scholar, Quote Lover, Co-Founder at Essar Student Fund & Blueprism Academia, belonging from Mehdiabad, Skardu, Gilgit Baltistan, Pakistan.
I am an academic writer & freelancer! I can work on Research Paper, Thesis Writing, Academic Research, Research Project, Proposals, Assignments, Business Plans, and Case study research.
Expertise:
Management Sciences, Business Management, Marketing, HRM, Banking, Business Marketing, Corporate Finance, International Business Management
For Order Online:
Whatsapp: +923452502478
Portfolio Link: https://blueprismacademia.wordpress.com/
Email: arguni.hasnain@gmail.com
Follow Me:
Linkedin: arguni_hasnain
Instagram : arguni.hasnain
Facebook: arguni.hasnain
WTAMU Communication Research Methods
Source: The Selection of a Research Approach in "Research Design:Qualitative, Quantitative, and Mixed Methods Approaches" by John W. Creswell (2014).
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Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
2. HYPOTHESIS
According to Kerlinger “A hypothesis is
conjectural statement of the relationship between
two or more variables”
Black and Champion defines a hypothesis as “ A
tentative statement about something the validity
of which is usually unknown”
3. CONT….
Bailey define it as “A proposition that is stated in
a testable form and that predicts a particular
relationship between two or more variables”
In quantitative research constructing a hypothesis
is 2nd important consideration in formulating of a
research problem
A hypothesis brings clarity, specificity and focus
to a research problem
4. CONT….
It tells a researcher what specific information to
collect, and thereby provide greater focus
A valid investigation can be conducted without
constructing a single formal hypothesis
Suppose you have a hunch that there are more
smokers than non-smokers in your class. To test
your hunch, you ask either all or just some of the
class if they are smokers. You can then conclude
whether your hunch was right or wrong
5. CONT….
As a researcher you do not know about a
phenomenon, a situation, the prevalence of a
condition in a population or about the outcome of
a programme, but you do have a hunch to form
the basis of certain assumptions or guesses
You test these mostly one by one by collecting
information that will enable you to conclude if
your hunch was right
The verification process can have one three
outcomes. Your hunch may prove to be : right ,
partially right or wrong
Without this process you cannot conclude
anything about the validity of your assumptions
6. CONT….
Hence, a hypothesis is a hunch, assumption,
suspicion, assertion or an idea about a
phenomenon relationship or situation, the reality
or truth of which you do not know
A researcher calls these assumptions, statements
or hunches hypotheses and they become the basis
of an enquiry
In most studies the hypothesis will be based upon
either previous studies or your own or someone
else‟s observations
7. FUNCTIONS OF A HYPOTHESIS
The formulation of a hypothesis provides a study
with focus. It tells you what specific aspects of a
research problem to investigate
A hypothesis tells you what data to collect and
what not to collect
As it provides a focus, the construction of a
hypothesis enhances objectivity in a study
A hypothesis may enable you to add to the
formulation of theory. It enables you to conclude
specifically what is true or what is false
8. TESTING A HYPOTHESIS
To test a hypothesis you need to go through a
process that comprises three phases: (1)
constructing a hypothesis; (2) gathering
appropriate evidence; and (3) analysing evidence
to draw conclusions as to its validity
It is only after analysing the evidence that you
can conclude whether your hypothesis was true
or false
When you concluding about a hypothesis, you
specifically make a statement about the
correctness or otherwise of a hypothesis in the
form of „the hypothesis is true‟ or „the hypothesis
is false‟
9. CONT….
It is therefore important that you formulate your
hypothesis clearly, precisely, and in a form that
is testable
In arriving at a conclusion about the validity of
your hypothesis, the way you collect your
evidence is of central importance and it is
therefore essential that your study design,
sample, data collection method, data analysis
and conclusion and communication of the
conclusions be valid, appropriate and free from
any bias
10. THE CHARACTERISTICS OF A HYPOTHESIS
Should be simple, specific and conceptually
clear: There is no place for ambiguity in the
construction of a hypothesis, as it will make the
verification of your hypothesis almost impossible
It should be one-dimensional that is, it should
test only one relationship or hunch a time
To be able to develop a good hypothesis you must
be familiar with the subject area
The more insight you have into a problem, the
easier it is to construct a hypothesis
11. CONT….
For example: the average age of male students in
this class higher than that of female students
The above hypothesis is clear, specific and easy to
test.
It tells you what you are attempting to compare
(average age of this class) which population
group are being compared (female and male
students) and what you want to establish (higher
average age of male students)
12. CONT….
Should be capable of verification: Methods
and techniques must be available for data
collection and analysis. There is no point in
formulating a hypothesis if it cannot be subjected
to verification because there no techniques to
verify it.
However, this does not mean that you should not
formulate a hypothesis for which there are no
methods of verification
You might, in the process of doing your research,
develop new techniques to verify it
13. CONT….
Should be related to the existing body of
knowledge: It is important that your hypothesis
emerges from the existing body of knowledge,
and that it adds to it, as this important function
of research
Should be operationalisable: This means that
it can be expressed in terms that can be
measured. If it cannot be measured it cannot be
tested and, hence, no conclusion can be drawn
14. TYPES OF HYPOTHESIS
Theoretically there should be only one type of
hypothesis, that is the research hypothesis.
However because of conventions in scientific
enquiries and because of the wording used in the
construction of a hypothesis, hypothesis can be
classified into several types
Broadly there are two categories of hypothesis
A) Research hypothesis
B) Alternative hypothesis
15. CONT….
The main function of alternative hypothesis is to
clearly specify the relationship that will be
considered as true in case in case the research
hypothesis proves to be wrong. In this way
alternative hypothesis is the opposite of research
hypothesis
Suppose you want to study the smoking pattern
in a community in relation to gender differential
the following hypothesis could be constructed….
16. CONT….
1. There is no difference in proportion of male
and female smokers in the study population
2. A greater proportion of females than males are
smokers in the study population
3. A total 60% of females and 30% males in the
study population are smokers
4. There are twice as many female smokers as
male smokers in the study population
17. CONT….
When you construct a hypothesis stipulating that
there is no difference between two situations, groups,
outcomes, or the prevalence of a condition or
phenomenon, this is called null hypothesis (H0) ex.1
A hypothesis in which a researcher stipulates that
there will be a difference but does not specify its
magnitude is called a hypothesis of difference ex.2
A researcher may have enough knowledge about the
smoking behaviour of the community and its likely
outcomes to speculate almost the exact prevalence of
the situation in quantitative units. This type of
hypothesis is called hypothesis of point prevalence
ex.3
18. CONT….
The fourth type of hypothesis speculates a
relationship between the prevalence of a
phenomenon (smoking) among different
population(male and female)
This type of hypothesis stipulates the extent of
relationship in the term of prevalence of a
phenomenon in different population group ( twice
as many female as male smokers). This type of
hypothesis is called hypothesis of association
19. ERRORS IN TESTING A HYPOTHESIS
A hypothesis is an assumption that prove to
either correct or incorrect. Incorrect conclusions
about the validity of a hypothesis may be drawn
if:
The study design selected is faulty
The sampling procedure adopted is faulty
The method of data collection is inaccurate
The analysis is wrong
The statistical procedure applied are
inappropriate
The conclusion drawn are incorrect
20. CONT…..
In testing a hypothesis there is always the
possibility of errors attributable to the reasons
described earlier
Hence in drawing conclusion of a hypothesis, two
types of error can occur
Rejection of a null hypothesis when it is true.
This is known as a Type I error
Acceptance of a null hypothesis when it is false.
This is known as a Type II error
21. HYPOTHESES IN QUALITATIVE RESEARCH
One of the differences in qualitative and
quantitative research is around the importance
attached to and the extent use of hypotheses
when undertaking a study
As qualitative research are characterised by an
emphasis on describing, undertaking and
exploring a phenomena using categorical and
subjective measurement procedures construction
of hypothesis is neither advocated nor practised
In addition as the degree of specificity needed to
test a hypothesis is deliberately not adhered to in
qualitative research, the testing of hypothesis
becomes difficult and meaningless
22. CONT….
This does not mean that you cannot construct
hypotheses in qualitative research; the non-
specificity of the problem as well as methods and
procedures make the convention of hypotheses
formulation far less practicable and advisable
Even within quantitative studies the importance
attached to and the practice of formulating
hypotheses vary markedly from one academic
discipline to another