covariate: meaning, definition, pronunciation and examples
C2Academic, Technical, Scientific
Quick answer
What does “covariate” mean?
A variable that is possibly predictive of the outcome under study, often considered a confounding factor that needs to be controlled for in statistical analysis.
Audio
Pronunciation
Definition
Meaning and Definition
A variable that is possibly predictive of the outcome under study, often considered a confounding factor that needs to be controlled for in statistical analysis.
In statistics, a covariate is an independent variable that can influence the relationship between the primary independent variable and the dependent variable. It's a variable of secondary interest whose effect one wishes to control or account for. The term can also be used in broader scientific contexts to refer to any co-occurring factor that varies with the primary variable of interest.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or semantic differences. Usage is identical in academic and technical registers in both regions.
Connotations
Identical connotations of technical precision and statistical methodology.
Frequency
Equally rare in general discourse but standard and frequent in academic statistics, epidemiology, and psychology papers in both the UK and US.
Grammar
How to Use “covariate” in a Sentence
adjust for [covariate]control for [covariate][covariate] was included in the modelthe effect of [covariate]Vocabulary
Collocations
Examples
Examples of “covariate” in a Sentence
adjective
British English
- The covariate adjustment was crucial for valid inference.
- They performed a covariate-balanced analysis.
American English
- The covariate adjustment was essential for valid inference.
- They ran a covariate-adjusted model.
Usage
Meaning in Context
Business
Virtually never used. Might appear in advanced market research or data science reports discussing statistical models.
Academic
Core term in statistics, epidemiology, psychology, social sciences, and any field using quantitative methods. Essential for describing research methodology.
Everyday
Extremely rare. Would be confusing to a general audience.
Technical
Standard, precise term in data analysis, machine learning (feature engineering), and scientific research papers.
Vocabulary
Synonyms of “covariate”
Vocabulary
Antonyms of “covariate”
Watch out
Common Mistakes When Using “covariate”
- Using 'covariate' interchangeably with any 'variable'. A covariate specifically implies a potential influence on the dependent variable that needs statistical control.
- Pronouncing it as /ˈkoʊ.və.ri.eɪt/ (stress on first syllable). Correct stress is on the second syllable.
- Using it in non-technical contexts where 'factor' or 'condition' would be clearer.
FAQ
Frequently Asked Questions
Not exactly. All covariates are independent variables, but not all independent variables are called covariates. 'Covariate' specifically refers to an independent variable that is of secondary interest and whose effect we want to statistically control or account for, often because it might confound the relationship between the primary independent variable and the outcome.
No, 'covariate' is exclusively a noun in modern English usage. The related verb form is 'covary', meaning for two variables to vary together. The action is described with phrases like 'adjust for covariates' or 'control for covariates'.
They are closely related and often overlap. A confounder is a specific type of covariate that is associated with both the exposure (independent variable) and the outcome (dependent variable), and can distort the apparent relationship between them. All confounders are covariates, but a covariate might be controlled for reasons other than confounding (e.g., to increase precision).
Primarily in the methods and results sections of quantitative research papers across many sciences: medicine (clinical trials), epidemiology, psychology, economics, sociology, and ecology. It is also a standard term in advanced data science and machine learning contexts during the feature selection or preprocessing stages.
A variable that is possibly predictive of the outcome under study, often considered a confounding factor that needs to be controlled for in statistical analysis.
Covariate is usually academic, technical, scientific in register.
Covariate: in British English it is pronounced /ˌkəʊˈvɛə.ri.ət/, and in American English it is pronounced /koʊˈvɛr.i.ət/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “adjust for covariates”
- “hold covariates constant”
Learning
Memory Aids
Mnemonic
Think of a CO-pilot in a plane. A CO-variate is a CO-occurring variable that flies alongside your main variable of interest, and you must account for its influence to reach the correct destination (result).
Conceptual Metaphor
A BACKGROUND FACTOR (like background noise you must filter out), A COMPANION VARIABLE (traveling alongside the primary one), A CONFOUNDING INGREDIENT (in a recipe that alters the taste of the main ingredient).
Practice
Quiz
In which context is the term 'covariate' MOST appropriately used?