What is a variable in research PDF?
The characteristics that may change per unit is called variable. Variables play an important role in most of the researches, especially in quantitative type of researches in which numeric or quantitative data are gathered and analysed. Generally, variables are not considered in some of the qualitative type of research.
What are the variables in research?
A variable in research simply refers to a person, place, thing, or phenomenon that you are trying to measure in some way. The best way to understand the difference between a dependent and independent variable is that the meaning of each is implied by what the words tell us about the variable you are using.
How do you measure variables in research?
When measuring using a nominal scale, one simply names or categorizes responses. Gender, handedness, favorite color, and religion are examples of variables measured on a nominal scale. The essential point about nominal scales is that they do not imply any ordering among the responses.
Why do we use variables in research?
While the variation of an independent variable will influence the variation of dependent variable, both variables give the study a focus. Dependent and independent variables are also important because they determine the cause and effects in research.
What is the relationship between independent and dependent variables in research?
In analytical health research there are generally two types of variables. Independent variables are what we expect will influence dependent variables. A Dependent variable is what happens as a result of the independent variable.
What are the variables in quantitative research?
Quantitative variables are those variables that are measured in terms of numbers. Some examples of quantitative variables are height, weight, and shoe size. In the study on the effect of diet discussed above, the independent variable was type of supplement: none, strawberry, blueberry, and spinach.
What is a measurable variable?
The measurable variable, as the name suggests, is the variable that is measured in an experiment. It is the dependent variable (DV), which depends on changes to the independent variable (IV). Any experiment studies the effects on the DV resulting from changes to the IV.
What are variables give examples of measurable variables?
It can be anything represented by a number. For example: pH (measured with litmus paper), bone density (measured with a special kind of x-ray) or averages of anything (measured by a formula). These types of variables are sometimes formally called quantitative variables, especially in academia.
How is a dependent variable measured?
The dependent variable is the variable that is being measured or tested in an experiment. For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants’ test scores, since that is what is being measured.
What are the units of the independent variable and dependent variable?
An independent variable is a variable that is manipulated to determine the value of a dependent variable. The dependent variable is what is being measured in an experiment or evaluated in a mathematical equation and the independent variables are the inputs to that measurement.
What is a dependent variable unit?
There is typically a dependent variable named throughput with units “bits per second.” The most common dependent variable is task completion time with units “seconds” or “milliseconds.” If the measurement is a simple count of events, there is no unit per se.
What is another word for dependent variable in science?
Statistics synonyms Depending on the context, a dependent variable is sometimes called a “response variable”, “regressand”, “criterion”, “predicted variable”, “measured variable”, “explained variable”, “experimental variable”, “responding variable”, “outcome variable”, “output variable”, “target” or “label”.
What is another name for test variable?
The dependent variable in an experiment might also be called the measurable value, response or experimental variable.
What are the types of dependent variables?
A dependent variable is also called:
- An experimental variable.
- An explained variable.
- A measured variable.
- An outcome variable.
- An output variable.
- A responding variable.
- A regressand (in regression analysis.)
- A response variable.
What is the correct definition of dependent variable?
A dependent variable is a variable whose value will change depending on the value of another variable, called the independent variable. In a scientific experiment, it is the variable being tested, and therefore, it is called the dependent variable.