E-ISSN 2636-834X
 

Technical Note 


Analysis of covariance

Selim Kılıç.

Abstract
Analysis of Covariance (ANCOVA) is a statistical method which is an extension of ANOVA that provides a way of statistically controlling the linear effect of variables one does not want to examine in a study. These extraneous variables are called covariates, or control variables. Covariates should be measured on an interval or ratio scale. ANCOVA, which combines regression analysis and analysis of variance (ANOVA), controls for the effects of covariate(s). There should be no multicollinearity between covariates. On the other hand there should be a linear association between dependent variable and covariate(s). If a good covariate is used in ANCOVA, then type 2 error decreases, in other words the power of the study increases.

Key words: ANOVA, linear regression, covariate


 
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Pubmed Style

Selim Kılıc. [Analysis of covariance]. PBS. 2017; 7(1): 73-8. Turkish. doi:10.5455/jmood.20161230045344


Web Style

Selim Kılıc. [Analysis of covariance]. https://www.pbsciences.org/?mno=238966 [Access: December 04, 2023]. Turkish. doi:10.5455/jmood.20161230045344


AMA (American Medical Association) Style

Selim Kılıc. [Analysis of covariance]. PBS. 2017; 7(1): 73-8. Turkish. doi:10.5455/jmood.20161230045344



Vancouver/ICMJE Style

Selim Kılıc. [Analysis of covariance]. PBS. (2017), [cited December 04, 2023]; 7(1): 73-8. Turkish. doi:10.5455/jmood.20161230045344



Harvard Style

Selim Kılıc (2017) [Analysis of covariance]. PBS, 7 (1), 73-8. Turkish. doi:10.5455/jmood.20161230045344



Turabian Style

Selim Kılıc. 2017. [Analysis of covariance]. Psychiatry and Behavioral Sciences, 7 (1), 73-8. Turkish. doi:10.5455/jmood.20161230045344



Chicago Style

Selim Kılıc. "[Analysis of covariance]." Psychiatry and Behavioral Sciences 7 (2017), 73-8. Turkish. doi:10.5455/jmood.20161230045344



MLA (The Modern Language Association) Style

Selim Kılıc. "[Analysis of covariance]." Psychiatry and Behavioral Sciences 7.1 (2017), 73-8. Print.Turkish. doi:10.5455/jmood.20161230045344



APA (American Psychological Association) Style

Selim Kılıc (2017) [Analysis of covariance]. Psychiatry and Behavioral Sciences, 7 (1), 73-8. Turkish. doi:10.5455/jmood.20161230045344