Variables – Research YouTube Lecture Handouts

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Watch video lecture on YouTube: 28 Types of Variables in Research Methodology: Independent & Dependent Variables 28 Types of Variables in Research Methodology: Independent & Dependent Variables
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Attribute or Quality Differ in magnitude

Control of Variables

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Control of Variables for Variables Image - 1

Control of Variables For Variables Image - 1

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Control of Variables for Variables Image - 2

Control of Variables For Variables Image - 2

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Control of Variables for Variables Image - 3

Control of Variables For Variables Image - 3

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Control of Variables for Variables Image - 4

Control of Variables For Variables Image - 4

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

Variables Based on Scaling For Variables Image - 5

Variables Based on Scaling for Variables Image - 5

Variables Based on Scaling For Variables Image - 5

Continuous, Discrete & Categorical Variable

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Continuous, Discrete and Categorical Variable for Variables Image - 6

Continuous, Discrete and Categorical Variable For Variables Image - 6

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

  • ary/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