Research Methodology (Part 3 of 3): 28 Types of Variables - Independent & Dependent Variables 

Dr. Manishika Jain in this lecture explains the meaning of variables and explain the 28 types of variables:
Dr. Manishika Jain
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Attribute or Quality
Differ in magnitude
Control of Variables
IV, DV, Mediating Variable
IV: Characteristic of experiment that is manipulated
DV: Variable measured
Mediating/intervening - hypothetical concept explain relation b/w variables (Parent’s status - child’s status by education)
Confounding - extra variable (effect of activity on obesity - AGE)
Dig! Dig!
Effect of noise on test score
IQ varies with age
Quantitative vs. Qualitative
Quantitative: Numbers (Interval/ratio)
Qualitative: attitude (good or bad) - can be compared not measured (nominal/ordinal)
Variables based on Scaling
Continuous, Discrete & Categorical Variable
Absolute vs. Relative
Absolute: Meaning doesn’t imply reference to property of others
Relative: Relationship b/w persons and objects
Global, Relational & Contextual
Global: Only to the level at which they are defined
Relational: Relationship of a unit
Contextual: Super-unit (all at lower level receive same value) - disaggregation
Analytical & Structural: From lower level data - aggregation
Active: Can be manipulated - experimental
Attribute: Pre-existing quality
Binary/Dichotomous: pass/fail (0 - 1)
Endogenous
Exogenous
Dummy - record categorical variable in series of binary variable
Latent - cannot be observed (intelligence)
Manifest - indicates presence of latent (IQ score)
Polychotomous - with 2 or more possible values
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Variables @0:16
Control of Variables @0:38
IV, DV, Mediating Variable @4:26
Quantitative vs. Qualitative @6:28
Quantitative @6:31
Qualitative @6:53
Variables based on Scaling @7:16
Continuous, Discrete & Categorical Variable @11:10
Absolute vs. Relative @12:28
Global, Relational & Contextual @13:05
#Contextual #Categorical #Categorical #Scaling #Measured #Confounding #Hypothetical #Mediating #Independent #Variables #Manishika #Examrace
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0:00 Introduction
0:36 Control of Variables
4:25 IV, DV, Mediating Variable
6:22 Quantitative vs. Qualitative
7:14 Variables based on Scaling
11:08 Continuous, Discrete & Categorical Variable
13:04 Global, Relational & Contextual Global: Only to the level at which they are defined #examrace #upsc #ugcnet