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Variables and Operational Definitions Variables and Operational Definitions The following module explains the different types of variables in quantitative research and discusses operational definitions of variables.
Define and explain the types of variables in a quantitative research project. Identify the variables in research examples.
Define and explain operational definitions and provide an example. The goal of quantitative research is to examine the relationships between variables.
A variable is a characteristic or attribute of interest in the research study that can take on different values and is not constant.
A definition may also be classified as an operational definition or theoretical definition. Terms with multiple definitions Homonyms. A homonym is, in the strict sense, one of a group of words that share the same spelling and pronunciation but have different meanings. Thus homonyms are simultaneously. Operational Excellence is the execution of the business strategy more consistently and reliably than the competition. Operational Excellence is evidenced by results. Given two companies with the same strategy, the Operationally Excellent company will have lower operational risk, lower operating costs, and increased revenues relative to its competitors, creating value for customers and. Synonyms for operational at tranceformingnlp.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for operational.
Variables may be straightforward and easy to measure including characteristics such as gender, weight, height, age, size, and time. Other variable may be more complex and more difficult to measure. Examples of these types of variables may include socioeconomic status, attitudes, achievement, education level, and performance.
This module will focus on five types of variables: The two primary types of variables are dependent and independent variables. An independent variable is the variable manipulated or changed by the researcher. The independent variable affects or determines the values of dependent variable. The dependent variable is sometimes referred to as the outcome variable because the resulting outcome of manipulating the independent variable is typically the focus of the research study.
The dependent variable is the one that the researcher is attempting to predict or explain.
The distinction between independent and dependent variables is especially important when studying cause-effect relationships.
Following are two examples: A researcher wants to study the effectiveness of different dosages of a particular antibiotic in clearing an infection. The independent variable - varying dosages of antibiotic. The dependent variable - the presence or absence of infection following a specific time period.
The researcher plans to study the relationship between the amount of time spent in a study group and test scores. The independent variable — number of hours spent in a study group.
The dependent variable — test scores. Extraneous variables, sometimes referred to as nuisance or confounding variables, are not the variables of primary interest. However, they are believed to be related to the independent or dependent variable and therefore, may impact the results.
Researchers should attempt to control extraneous variables in order to attain meaningful results. If they cannot be controlled, extraneous variables should at least be considered when interpreting results.
A moderator variable is a variable that interacts with the independent variable and may influence the strength of the relationship between the independent and dependent variables.
This variable is measured and taken into consideration, making it different than an extraneous variable. For example, if studying the relationship between exercise and weight loss, the number of calories consumed maybe a moderating variable.
Mediating variables, commonly referred to as intervening variables, are processes that may not be observable but link the independent and dependent variables. An instructor may have a new teaching approach for a mathematical concept and plans to study the use of this approach and its relationship to test scores.
The differing levels at which students in the class are able to process abstract mathematical concepts is a mediating variable.
While it is important to identify, understand, and consider the variables within a study, the researcher must also consider the measurement of those variables and the types of values that may be collected. When measuring the values of variables, there are two main classifications: Categorical variables are those that express a qualitative attribute and do not express a numerical ordering.
These variables refer to different types or categories of phenomenon or characteristic. Some examples would include gender, eye color, race, religion, payment method, or social status. Quantitative variables vary in degree or amount and are expressed using numerical ordering.
Height, weight, shoe size, income, and test scores are quantitative variables.The new airport should be fully operational by next year. The computer network is now operational. Operational Definition By Renée Grinnell Identifies one or more specific, observable events or conditions such that any other researcher can independently measure and/or test for them.
Synonyms for operational at tranceformingnlp.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for operational. Operational definition Dictionary definition Product: is the service or goods the company produces.
There are some elements added to the product aside from the product itself to make the customer attracted to it, such as wrapping. A definition may also be classified as an operational definition or theoretical definition.
Terms with multiple definitions Homonyms.
A homonym is, in the strict sense, one of a group of words that share the same spelling and pronunciation but have different meanings. Thus homonyms are simultaneously. A philosophy of the workplace where problem-solving, teamwork, and leadership results in the ongoing improvement in an tranceformingnlp.com process involves focusing on the customers' needs, keeping the employees positive and empowered, and continually improving the current activities in the workplace.