What is an independent variable in a research paper?
What is an independent variable in a research paper?
Variables are given a special name that only applies to experimental investigations. One is called the dependent variable and the other the independent variable. The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable.
How do you find the independent variable in research?
You can use this typical form to determine the independent and dependent variables from the title of the study. If the study title is in the form “The effects of X on Y in Z”. X is the independent variable and Y is the dependent variable – the outcome, and Z is the type of subjects represented.
What will be your independent variable?
Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn’t changed by the other variables you are trying to measure. For example, someone’s age might be an independent variable.
What are the dependent and independent variables in research?
The variables in a study of a cause-and-effect relationship are called the independent and dependent variables. The independent variable is the cause. The dependent variable is the effect. Its value depends on changes in the independent variable.
What are key variables in a research study?
The key variables are the terms to be operationally defined if an Operational Definition of Terms section is necessary. The key variables provide focus to the Methods section. The Instrument will measure the key variables. These key variables must be directly measured or manipulated for the research study to be valid.
How important are variables in a research study?
Dependent and independent variables are important because they drive the research process. As defined earlier, a variable as opposed to a constant is simply anything that can vary and that many researchers consistently look at the relationship between these two variables.
What is an independent variable in quantitative research?
An independent variable is a variable in research that causes a change — or is presumed will cause a change — to other variables in the research conducted. Scientists can control the independent variable to monitor those changes or he can presume a change and look for evidence of those changes to the other variables.
Which of the following is an example of a continuous variable?
Answer: The weight of a fire fighter would be an example of a continuous variable; since a fire fighter’s weight could take on any value between 150 and 250 pounds. Suppose we flip a coin and count the number of heads. The number of heads could be any integer value between 0 and plus infinity.
What are two examples of continuous variables?
Another example is the height of your fellow students in your classroom. The values could be anywhere from, say, 4.5 feet to 7.2 feet. In general, quantities such as pressure, height, mass, weight, density, volume, temperature, and distance are examples of continuous random variables.
Is intelligence a continuous variable?
Other examples of continuous variables include measurements of many physical traits, such as weight, length, speed, and temperature. Many psychological traits, such as intelligence, paranoia, extroversion, and creativity, are also continuous variables.
What is a continuous independent variable?
VARIABLE: Characteristic which varies between independent subjects. CONTINUOUS (SCALE) VARIABLES: Measurements on a proper scale such as age, height etc. INDEPENDENT VARIABLE: The variable we think has an effect on the dependent variable.
How do you determine if two variables are independent?
Independence two jointly continuous random variables X and Y are said to be independent if fX,Y (x,y) = fX(x)fY (y) for all x,y. It is easy to show that X and Y are independent iff any event for X and any event for Y are independent, i.e. for any measurable sets A and B P( X ∈ A ∩ Y ∈ B ) = P(X ∈ A)P(Y ∈ B).
Can an independent variable be continuous?
There are three independent variables out of which two are being manipulated and are categorical variables. The independent continuous variable is of primary interest for the research. The focus is on finding the impact of the manipulated variables on the relation between independent and dependent variable.
What is a discrete independent variable?
If a variable can take on any value between its minimum value and its maximum value, it is called a continuous variable; otherwise, it is called a discrete variable. Therefore, the number of heads must be a discrete variable.
How do you know if something is discrete or continuous?
Definition: A set of data is said to be continuous if the values belonging to the set can take on ANY value within a finite or infinite interval. Definition: A set of data is said to be discrete if the values belonging to the set are distinct and separate (unconnected values).
How do you know if a variable is discrete or continuous?
A variable is a quantity whose value changes. A discrete variable is a variable whose value is obtained by counting. A continuous variable is a variable whose value is obtained by measuring. A random variable is a variable whose value is a numerical outcome of a random phenomenon.
Is time a discrete variable?
Time is a continuous variable. You could turn age into a discrete variable and then you could count it. For example: A person’s age in years.
Is travel time a discrete or continuous variable?
A continuous variable is one which can take on a value between any other two values, such as: indoor temperature, time spent waiting, water consumed, color wavelength, and direction of travel. A discrete variable corresponds to a digital quantity, while a continuous variable corresponds to an analog quantity.
Is profit a discrete or continuous variable?
In opposition to the counting numbers mentioned before, there are an infinite number of real numbers between zero and ten. Continuous variables behave in a similar way in that they can take on any value. These are usually variables such as Unit Price, Profit, or Order Quantity.