sign test: meaning, definition, pronunciation and examples
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Quick answer
What does “sign test” mean?
A non-parametric statistical test used to determine if there is a significant difference between the medians of two related or paired samples by analyzing the signs of the differences.
Audio
Pronunciation
Definition
Meaning and Definition
A non-parametric statistical test used to determine if there is a significant difference between the medians of two related or paired samples by analyzing the signs of the differences.
In broader contexts, it can refer to any method that uses signs (positive or negative) for hypothesis testing, applied in fields like psychology, medicine, and social sciences for data that does not meet parametric assumptions.
Dialectal Variation
British vs American Usage
Differences
No significant differences in terminology or application between British and American English.
Connotations
Identical in both varieties, primarily associated with academic and statistical contexts.
Frequency
Equally common in technical literature and research in both regions, with similar usage frequencies.
Grammar
How to Use “sign test” in a Sentence
V + the + sign test + on + Nthe + sign test + for + NN + be + analysed + using + the + sign testVocabulary
Collocations
Examples
Examples of “sign test” in a Sentence
verb
British English
- We need to sign-test the before-and-after measurements to see if the intervention worked.
- The team decided to sign-test the paired responses for consistency.
American English
- She will sign-test the data to validate the hypothesis.
- Researchers often sign-test clinical trial results when assumptions are violated.
adjective
British English
- The sign-test analysis revealed no significant changes in patient outcomes.
- Our report includes a sign-test procedure for the matched pairs.
American English
- Sign-test results are presented in the appendix of the study.
- He reviewed the sign-test methodology before approving the paper.
Usage
Meaning in Context
Business
Rarely used directly; may appear in data analysis for customer satisfaction surveys or A/B testing with non-normal data.
Academic
Common in statistics, psychology, and medical research papers for analyzing pre-post study designs or matched pairs.
Everyday
Almost never used in casual conversation; limited to educational or professional discussions.
Technical
Standard in non-parametric statistics, often taught in advanced courses and applied in scientific software.
Vocabulary
Synonyms of “sign test”
Strong
Neutral
Weak
Vocabulary
Antonyms of “sign test”
Watch out
Common Mistakes When Using “sign test”
- Using the sign test for independent samples instead of paired data.
- Confusing it with the Wilcoxon signed-rank test, which considers magnitude of differences.
- Misspelling as 'sighn test' or 'signe test'.
FAQ
Frequently Asked Questions
Use the sign test when your data is paired, does not meet normality assumptions, or has outliers, as it is non-parametric and based on median differences.
Yes, but it may have lower power compared to parametric tests; for large samples, consider alternatives like the Wilcoxon signed-rank test if magnitude matters.
No, the standard sign test is designed for two related samples; for multiple groups, other non-parametric tests like Friedman test are recommended.
A p-value less than the significance level (e.g., 0.05) indicates a significant difference in medians between the paired samples, suggesting an effect.
A non-parametric statistical test used to determine if there is a significant difference between the medians of two related or paired samples by analyzing the signs of the differences.
Sign test is usually technical in register.
Sign test: in British English it is pronounced /ˈsaɪn test/, and in American English it is pronounced /ˈsaɪn tɛst/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of SIGN test as checking the SIGNs (+ or -) of differences between paired observations to test for significance.
Conceptual Metaphor
A compass for navigating uncertain data, pointing towards true differences without assuming a smooth path.
Practice
Quiz
What is the primary function of the sign test?