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Choosing a non-parametric test

Explanations > Social Research > Analysis > Choosing a non-parametric test

Choosing the test | Discussion | See also

Choosing the test

Use the table below to choose the test. See below for further details.

How many separate samples?

1

How many scores for each subject?

1

How many measurement categories?
2	Binomial test
2+	Chi-square test for goodness of fit

2

Can difference scores be ranked?
Y	Wilcoxon test
N	Sign test

2

Matched samples? (N = independent)

Y

Can difference scores be ranked?
Y	Wilcoxon test
N	Sign test

N

Can scores be ranked with few tied values? (independent samples only)
Y	Median test
Y	Mann-Whitney test
N	Chi-square test for independence

Can scores be ranked with few tied values? (independent samples only)
Y	Median test
N	Chi-square test for independence
N	Krushkal-Wallas test

Discussion

Non-parametric tests do not assume an underlying Normal (bell-shaped) distribution.

There are two general situations when non-parametric tests are used:

Data is nominal or ordinal (where means and variance cannot be calculated).
The data does not satisfy other assumptions underlying parametric tests.

See also

Parametric vs. non-parametric tests

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Site Menu

| Home | Top | Quick Links | Settings |

Main sections: | Disciplines | Techniques | Principles | Explanations | Theories |

Other sections: | Blog! | Quotes | Guest articles | Analysis | Books | Help |

More pages: | Contact | Caveat | About | Students | Webmasters | Awards | Guestbook | Feedback | Sitemap | Changes |

Settings: | Computer layout | Mobile layout | Small font | Medium font | Large font | Translate |

Please help and share:

Quick links

Disciplines

* Argument
* Brand management
* Change Management
* Coaching
* Communication
* Counseling
* Game Design
* Human Resources
* Job-finding
* Leadership
* Marketing
* Politics
* Propaganda
* Rhetoric
* Negotiation
* Psychoanalysis
* Sales
* Sociology
* Storytelling
* Teaching
* Warfare
* Workplace design

Techniques

* Assertiveness
* Body language
* Change techniques
* Closing techniques
* Conversation
* Confidence tricks
* Conversion
* Creative techniques
* General techniques
* Happiness
* Hypnotism
* Interrogation
* Language
* Listening
* Negotiation tactics
* Objection handling
* Propaganda
* Problem-solving
* Public speaking
* Questioning
* Using repetition
* Resisting persuasion
* Self-development
* Sequential requests
* Storytelling
* Stress Management
* Tipping
* Using humor
* Willpower

Principles

Explanations

* Behaviors
* Beliefs
* Brain stuff
* Conditioning
* Coping Mechanisms
* Critical Theory
* Culture
* Decisions
* Emotions
* Evolution
* Gender
* Games
* Groups
* Habit
* Identity
* Learning
* Meaning
* Memory
* Motivation
* Models
* Needs
* Personality
* Power
* Preferences
* Research
* Relationships
* SIFT Model
* Social Research
* Stress
* Trust
* Values

Theories

* Alphabetic list
* Theory types

And

– About
– Guest Articles
– Blog!
– Books
– Changes
– Contact
– Guestbook
– Quotes
– Students
– Webmasters

| Home | Top | Menu | Quick Links |

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