All the postings should be APA style. Three paragraphs with three sentences Name five continuous, five discrete, and five categorical variables and identify which, if any are dichotomous and why?
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Chapter 3
Key Concepts and Steps in Qualitative and Quantitative Research
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Question
Tell whether the following statement is true or false:
A variable is a characteristic or quality that takes on different values.
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Answer
True
A variable is a characteristic or quality that takes on different values.
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Question
Tell whether the following statement is true or false:
The dependent variable is the presumed cause of the problem.
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Answer
False
The independent variable is the presumed cause (of a dependent variable). The dependent variable is the presumed effect (of an independent variable).
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Variable
A characteristic or quality that takes on different values, that is, something that varies from one person to the next
Examples:
- Blood type
- Weight
- Length of stay in hospital
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Types of Variables
- Continuous (e.g., height)
- Discrete (e.g., number of children)
- Categorical (e.g., marital status)
- Dichotomous (e.g., gender)
- Attribute variable versus active variable
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Types of Variables (cont.)
Independent variable—the presumed cause (of a dependent variable)
Dependent variable—the presumed effect (of an independent variable)
Example: Smoking (IV) Lung cancer (DV)
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Question
Tell whether the following statement is true or false:
Conceptual definition is the operations a researcher must perform to collect the desired information.
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Answer
False
Conceptual definition: the abstract or theoretical meaning of a concept being studied
Operational definition: the operations (measurements) a researcher must perform to collect the desired information
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Definitions of Concepts and Variables
- Conceptual definition: the abstract or theoretical meaning of a concept being studied
- Operational definition: the operations (measurements) a researcher must perform to collect the desired information
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Relationships
Relationship: a bond or connection between variables
- Cause-and-effect (causal) relationship (e.g., cigarette smoking and lung cancer)
- Functional (associative) relationship (e.g., gender and life expectancy)
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Major Classes of Quantitative Research
Experimental research
Researchers actively introduce an intervention or treatment.
Nonexperimental research
Researchers collect data without intervening or introducing treatments.
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Major Research Traditions in Qualitative Research
- Grounded theory research
- Phenomenological research
- Ethnographic research
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Question
What is the first phase in a quantitative study?
A. Conceptual phase
B. Design and planning phase
C. Empirical phase
D. Analytic phase
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Answer
A
The phases in a quantitative study are:
- Phase 1: Conceptual phase
- Phase 2: Design and planning phase
- Phase 3: Empirical phase
- Phase 4: Analytic phase
- Phase 5: Dissemination phase
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Phases in a Quantitative Study
- Phase 1: Conceptual phase
- Phase 2: Design and planning phase
- Phase 3: Empirical phase
- Phase 4: Analytic phase
- Phase 5: Dissemination phase
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Major Steps in a Quantitative Study
- Phase 1: Conceptual phase
Formulating the problem
Reviewing related literature
Undertaking clinical fieldwork
Defining the framework and developing
conceptual definitions
Formulating hypotheses
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Major Steps in a Quantitative Study (cont.)
Selecting a research design
Developing intervention protocols
Identifying the population
Designing the sample plan
Phase 2: Design and planning phase
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Major Steps in a Quantitative Study (cont.)
- Phase 2: Design and planning phase (cont.)
Specifying methods to measure research
variables and collect data
Developing methods to protect
human/animal rights
Finalizing and reviewing the research plan
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Major Steps in a Quantitative Study (cont.)
- Phase 3: Empirical phase
Collecting data
Preparing data for analysis
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Major Steps in a Quantitative Study (cont.)
- Phase 4: Analytic phase
Analyzing the data
Interpreting results
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Major Steps in a Quantitative Study (cont.)
- Phase 5: Dissemination phase
Communicating the findings
Utilizing findings in practice
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Activities in a Qualitative Study
Conceptualizing and planning the
study
Conducting the study
Disseminating the findings
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Research Journal Articles
Summarize the context, design, and results of a study; the primary method of disseminating research evidence
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Content of Journal Articles
- Abstract
- Introduction
- Methodology
- Results
- Discussion
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