in the name of allah kareem, most beneficent, most gracious, the most merciful !
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In the name of Allah Kareem, Most Beneficent, Most Gracious, the Most Merciful !. RESEARCH METHOD. LECTURE: 3. Quantitative Research - PowerPoint PPT PresentationTRANSCRIPT
In the name of Allah Kareem,Most Beneficent, Most Gracious, the Most Merciful !
33SUPERIOR GROUP OF COLLEGES
• Quantitative ResearchQuantitative research is "a formal, objective, systematic process in which numerical data are utilised to obtain information about the world" (Burns and Grove cited by Cormack 1991). Quantitative research is inclined to be deductive. In other words it tests theory.
General aims of quantitative research
• Quantitative ResearchQuantitative research is "a formal, objective, systematic process in which numerical data are utilised to obtain information about the world" (Burns and Grove cited by Cormack 1991). Quantitative research is inclined to be deductive. In other words it tests theory.
General aims of quantitative research
•To generalize •To be objective•To test theories or hypotheses
•To generalize •To be objective•To test theories or hypotheses
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1. Theory
3. Research Design
4. Devise measures of concepts
5. Select research site(s)
2. Hypothesis
6. Select research subjects / Respondents
7. Administer research instruments / collect data
8. Process data
11. Write up findings /conclusions
10. Findings / Conclusions
9. Analysis and interpretations
Quantitative Research ProcessQuantitative Research Process
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Concepts and their Measurement
Concept:
Concepts are the generalized ideas about objects, attributes, occurrence or process that has been given a name for identification, be it physical or non physical. Concepts are the building blocks of theory.
ExamplesAchievement motivation, Structure, agency,
technology, leadership, followers, TQM, functional subcultures, knowledge, managerial identity, motivation, Morale, productivity, etc
Concept:
Concepts are the generalized ideas about objects, attributes, occurrence or process that has been given a name for identification, be it physical or non physical. Concepts are the building blocks of theory.
ExamplesAchievement motivation, Structure, agency,
technology, leadership, followers, TQM, functional subcultures, knowledge, managerial identity, motivation, Morale, productivity, etc
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Anything that may have varied (different) numerical or categorical values is called variables
Example: Gender is a variable: it can take two values male or female. Family income is also a variable as it can take values form zero to billions of rupees.
Variable
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A construct is a hypothetical mechanism that helps explain and predict behavior in a theory.
Example: A bright boy does poor work in college because he has low motivation. Now the question is what motivation is. How we can measure whether it is low or high. Such variables are called Construct, Hypothetical or In-tangibles variables.
Construct Variable
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Operationalization is the process of defining a concept so that it becomes measurable variable, which is achieved by looking at behavioral dimensions and categorizing them into observable and measurable elements. When ever the variables in the research study are hypothetical or construct, you must use operational definition to define and measure the variables.
Operationalization is the process of defining a concept so that it becomes measurable variable, which is achieved by looking at behavioral dimensions and categorizing them into observable and measurable elements. When ever the variables in the research study are hypothetical or construct, you must use operational definition to define and measure the variables.
Operationalization
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Steps of Operationalization
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Gender1.Male2.Female
Motivation1.Highly Motivated2.Moderately Motivated3.Less Motivated
Temperature1.97 C2.98 C3.99 C
Time1.10 seconds
Means 10 seconds more than 0
ooo
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Scale Definition Properties Base Example
Nominal scale
A scale in which objects or individual is broken into categories that have no numerical properties.
Identity Difference
• Gender
• Nationality
• Religion
Ordinal Scale
A scale in which objects or individuals are categorized and the categories form a rank order along a continuum.
Directional Order A is longer than B
Comparison Chart
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Scale Definition Properties Base Example
Interval Scale
A scale in which the units of measurement (intervals) between the numbers on the scale are all equal.
Equal unit
SizeMagnitude A is 2 feet longer than B
Ratio Scale
A scale in which, in addition to order and equal units of measurement, there is an absolute zero that indicates an absence of the variables being measure.
Ratio Absolute zero
A is 2 feet long means 2 feet more than “0”
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Binary Response formats
Numerical Response formats
Verbal formats
Bipolar numerical formats
Frequency formats
Response formats for scales
My job is usually interesting enough to keep me from getting bored• agree• disagree
My job is usually interesting enough to keep me for getting bored5 4 3 2 1
May job is usually interesting enough to keep me from getting boredStrongly agree__ agree__ undecided__ disagree___ strongly disagree__
I love my job 5 4 3 2 1I hate my job
My job is usually interesting enough to keep me from getting bored• All of the time ____ • often _____ • fairly often ____ • occasionally ___ • none of the time ____
My job is usually interesting enough to keep me from getting bored• All of the time ____ • often _____ • fairly often ____ • occasionally ___ • none of the time ____
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Face Validity
(Validity where measure apparently reflects the content of the concept in
question)
Predictive
(Researcher employs the criterion whereby a new scale predicts a future
event)
Validity(Are we Measuring the
Right thing)
Convergent
(A test has convergent validity if it has a high correlation with another test that measures the same construct)
Concurrent
(Researcher employs the criterion whereby a new scale measures a
current event)
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Reliability
(Accuracy in
Measurement)
Test-retest reliability
Inter-iterm consistency reliability
Split- half reliability
Parallel-form reliability
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SAMPLINGSAMPLINGImportant terms in Sampling
Population - basically, the universe of units from which the sample is to be selected. The term ‘units’ is employed because it is not necessarily people who are being sampled. The researcher may want to sample from a universe of nations, cities, regions, firms, etc. thus, ‘population’ has a much broader meaning than the everyday use of the term, whereby it tends to be associated with a nation’s entire population.
Sample – the segment of the population that is selected for the investigation. It is a subset of the population. The method of selection may be based on a probability or a non-probability approach (see below).Sampling frame – the listing of all the units in the population from which the sample will be selected.Representative Sample – a sample that reflects the populationSampling error – the difference between a sample and the population from which it is selected, even though a probability sample has been selected. Sampling is the process of selecting segment of the population for investigation
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Sampling
Sampling Technique
Probability
Non-Probability
Simple random sample
Systematic sample
Stratified random sample
Convenience sampling
Snowball sampling
Quota sampling
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QUANTITATIVE METHODS
QUANTITATIVE METHODS
SurveysSurvey is a quantitative research strategy that involves the structured collection of data from a pre-determined sample. It involves following methods
1.Questionnaire2.Structured interview3.Structured Observation
SurveysSurvey is a quantitative research strategy that involves the structured collection of data from a pre-determined sample. It involves following methods
1.Questionnaire2.Structured interview3.Structured Observation
Survey
Questionnaire Structured Interview
On-line questionnaires
Postal questionnaires
Self administered questionnaires Telephone
InterviewsFace to face
interview
Structured Observation
Participant Observation
Non -Participant Observation
QUESTIONNAIRES QUESTIONNAIRES
“Questionnaire is pre-formulated written set of questions to which respondents record their answers”.
“Questionnaire is pre-formulated written set of questions to which respondents record their answers”.
Questionnaires can be: Questionnaires can be:
On-line questionnaires Postal questionnaires Self administered questionnaire
On-line questionnaires Postal questionnaires Self administered questionnaire
Variety of factors influence questionnaire
Variety of factors influence questionnaire
The choice of questionnaire will be influenced by a variety of factors related to your
The choice of questionnaire will be influenced by a variety of factors related to your
Research question (s) Research objective Characteristics of respondents Size of sample Dimensions of the concept to be measured And availability of required resources.
Research question (s) Research objective Characteristics of respondents Size of sample Dimensions of the concept to be measured And availability of required resources.
Questionnaire
Principle of
wording
Principles Of
Measurement
General “Getup”
Content and Purpose ofquestion
Wording&
language
Types and form of questionnaire
SequencingClassification
Data or personalinformation
Categorizing
Coding
Scales and
Scaling
Reliability&
Validity
Appearance of questionnaire
Length of questionnaire
Introduction to respondents
Introduction for completion
DESIGNING A QUESTIONNAIREDESIGNING A QUESTIONNAIRE
Designing a questionnaire is based on following principlesDesigning a questionnaire is based on following principles
1- Principle of wording
i. The nature of the variable will determine what kind and number of questions will be asked i.e ranking, rating or dichotomous
ii. The wording should be simple, easy and appropriate
iii. Closed ended questions will be used with the intention to have ease, and enhanced comparability.
1- Principle of wording
i. The nature of the variable will determine what kind and number of questions will be asked i.e ranking, rating or dichotomous
ii. The wording should be simple, easy and appropriate
iii. Closed ended questions will be used with the intention to have ease, and enhanced comparability.
iv. Add both positively as well as negatively worded questionsiv. Add both positively as well as negatively worded questions
v. Always avoid double barreled, ambiguous, recall dependent, leading or loaded questions
v. Always avoid double barreled, ambiguous, recall dependent, leading or loaded questions
vi. The sequence of questions in the questionnaire should be from general to specific, and easy to more difficult. It is also called funnel approach.
vi. The sequence of questions in the questionnaire should be from general to specific, and easy to more difficult. It is also called funnel approach.
2- Principle of Measurement:
i. Interval and Ratio scales should be used in preference to nominal or ordinal scales
ii. The measure must be assessed through tests of validity and reliability
2- Principle of Measurement:
i. Interval and Ratio scales should be used in preference to nominal or ordinal scales
ii. The measure must be assessed through tests of validity and reliability
3- General Getup:
As a whole the questionnaire should cover the following aspects
i- The questionnaire should start with a good Introduction followed by well organized questions with instructions and guidance and sequence. Only relevant personal information should be demanded that is not sensitive, at last and ended with a courteous note.
3- General Getup:
As a whole the questionnaire should cover the following aspects
i- The questionnaire should start with a good Introduction followed by well organized questions with instructions and guidance and sequence. Only relevant personal information should be demanded that is not sensitive, at last and ended with a courteous note.
Structured InterviewingStructured Interviewing
Structured interviewing is the process of administering an interview schedule by an interviewer. The aim is for all interviewees to be
given exactly the same context of questioning. In this way the interviewers are supposed to read questions exactly.
Structured interviewing is the process of administering an interview schedule by an interviewer. The aim is for all interviewees to be
given exactly the same context of questioning. In this way the interviewers are supposed to read questions exactly.
Structured Observations Structured Observations “It is a purposeful, systematic and selective way of watching and listening to an interaction or phenomenon as it takes place”.
Observation is suitable when
Researcher is more interested in the behavior rather in the perceptions of individuals, When the subjects are so involved in the interaction that they are unable to provide objective information about it.
“It is a purposeful, systematic and selective way of watching and listening to an interaction or phenomenon as it takes place”.
Observation is suitable when
Researcher is more interested in the behavior rather in the perceptions of individuals, When the subjects are so involved in the interaction that they are unable to provide objective information about it.
Types of ObservationsTypes of ObservationsThere are two types of observation:
1. Participants observation2. Non-participants observation
There are two types of observation:
1. Participants observation2. Non-participants observation
Participant Observation:
It is when a researcher participates in the activities of the group being observed in the same manner as its members, with or without their knowing that they are being observed
Participant Observation:
It is when a researcher participates in the activities of the group being observed in the same manner as its members, with or without their knowing that they are being observed
Non-participant Observation:
Is when a researcher do not get involved in the activities of the group but remains a passive observer, watching and listening to its activities and drawing conclusions from this.
E.g. observing through cameras
Non-participant Observation:
Is when a researcher do not get involved in the activities of the group but remains a passive observer, watching and listening to its activities and drawing conclusions from this.
E.g. observing through cameras
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Mode of data
Description Advantages Disadvantages
Personal or face-to-face interviews
The interviewer and interviewee confronted each other
Can establish rapport and motivate respondentsCan clarify the questions, clear doubts add new questionsCan read nonverbal cuesCan use visual aids to clarify points.Rich data can be obtainedCAPI can be used and responses entered in a portable computer
Takes personal timeCosts more when a wide geographic region is coveredRespondents may be concerned about confidentiality of information given Interviewers need to be trained‘can introduce interviewer biasesRespondents can terminate the interview any time
Telephone Interviews
Interview which were conducted through communication.
Less costly and speedier that personal interviews.Can reach a wide geographic areaGreater anonymity than personal interviews.
Nonverbal cues cannot be readInterviews will have to be kept short Obsolete telephone number could be contacted, and unlisted ones omitted from the sample
Self-completion questionnaire
Self-questionnaire is a questionnaire in which interviewee answer the question by himself
Can establish rapport and motivate respondentDoubts can be clarifiedLess expensive when administered to groupsAlmost 100 % response rate ensuredAnonymity of respondent is high
Organizations may be reluctant to give up company time for the survey with group of employees assembled for the purpose
Postal Questionnaire
It is a type of questionnaire which can be sending to the respondent through mail or any other postal mode.
Anonymity is highWide geographic regions can be reached.Token gifts can be enclosed to seek complianceRespondent can take more time to respond at convenienceCan be administered electronically, if desired
Response rate is almost always Cannot clarify questionsFollow-up procedures for no responses are necessary
Electronic Questionnaire
The questionnaire which you send through internet
Easy to administerCan reach globallyVery inexpensive Fast deliveryConvenient for Respondents
Computer literacy in a must Respondents must have access to the facilityRespondent must be willing to complete the survey
Participants Observation
Researcher participates in the activities of the group being observed in the same manner
Better accuracyLess costResearcher is collecting observed data not reported dataCan obtain data from those unable to communicate in written or oral form
Participant observation takes time and commitmentUsually does not examine motivation, attitude or feeling toward particular behaviorTime cost
Non-Participants Observation
Researcher do not get involved in the activities of the group but remains a passive observer
The individual may simply be unaware of how they behave in a particular situation.Safe the researcher time
The lack of interaction may, however make it difficult for the researcher to be able to clarify or interrupt the phenomena been investigatedDifficulty in data storing
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Mystery shopping is a popular technique used in consumer research that involves sending people (mystery shoppers) into a shop to buy products with the intention to evaluate the effectiveness of retail staff. After the interaction, the shoppers typically fill out rating sheet detailing the nature of the interaction and service they receive. It’s a type of field stimulation.
Mystery shopping is a popular technique used in consumer research that involves sending people (mystery shoppers) into a shop to buy products with the intention to evaluate the effectiveness of retail staff. After the interaction, the shoppers typically fill out rating sheet detailing the nature of the interaction and service they receive. It’s a type of field stimulation.
Mystery Shopping
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