Lecture Glossary


Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

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A

Alternative Hypothesis (H₁)

A statement proposing that there is a significant relationship or difference between variables, which the research aims to support.


C

Causality

The principle that one variable (cause) directly influences another (effect), often tested through hypotheses in experimental designs.


D

Dependent Variable

The variable in a hypothesis that is affected or influenced by the independent variable; the outcome being measured.


Directional Hypothesis

A hypothesis specifying the expected direction of the relationship or difference between variables (e.g., increase or decrease).


H

Hypothesis

A testable, predictive statement about the relationship between variables, used in quantitative research to guide investigation.


I

Independent Variable

The variable in a hypothesis that influences or causes a change in the dependent variable; the factor manipulated or controlled.


N

Non-Directional Hypothesis

A hypothesis stating that a relationship or difference exists between variables without specifying the direction.


Null Hypothesis (H₀)

A statement proposing no significant relationship or difference between variables, which the research aims to reject.


O

Operational Definition

A clear, measurable description of how variables in a hypothesis will be observed or quantified.


P

P-Value

A statistical measure indicating the probability of obtaining results as extreme as those observed, used to test hypotheses (typically p < 0.05 for significance).



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