This document discusses variables in research and defines different types of variables. It explains that variables are anything that can vary, such as weight, height, or temperature, and identifies two main types - common and uncommon variables. The document provides examples of common variable types like qualitative and quantitative, and defines independent, dependent, and confounding variables. It notes that an independent variable is what is manipulated in a study to observe its effect on a dependent variable, while a confounding variable influences both and can produce misleading results.

1. METHODOLOGY
VARIABLES IN
REASEARCH
BY
NARMATHA P

2. VARIABLES
Anything that has a quantity or
quality that varies.

3. DEFINITION
 A variables, as the name implies, is
something that varies. It may be
weight, height, anxiety level,
income, body temperature and so on.
 A characteristic, number, or quantity
that increases or decreases over time,
or takes different values in different
situations.

4. TYPES OF VARIABLES
We have two kinds of variables
which are Common and
Uncommon.
Totally more than forty five
variables.

5. EXAMPLES
Common Uncommon
Qualitative Active
Quantitative Grouping
Independent Indicator
Dependent Intervening
Control Interval
Confounding Dummy
Continuous Binary

6. INDEPENDENT VARIABLE
 If the independent variable is an
active variable then we manipulate
the values of the variable to study its
affect an another variable.
 Ex.
Eating ice cream causes to fever
I.V

7. DEPENDENT VARIABLE
 Dependent variable is the variable
that is affected by the independent
variable.
 Ex.
Eating ice cream causes to fever
D.V

8. CONFOUNDING VARIABLE
 A confounding is the variable that
influence both the independent
variables and dependent variables
causing a spurious association.
 Ex.
But it is not the only reason to
getting fever. C.V

9. Confounding