# analysis of variance

**analysis of variance***n*analysis of variation in an experimental outcome and esp. of a statistical variance in order to determine the contributions of given factors or variables to the variance* * *

(ANOVA) a statistical method for analyzing the effects of each of one or more categorical (nominal, ordinal, or dichotomous) independent variables on a continuous dependent variable as well as on each other, examining more than two groups simultaneously; if the null hypothesis that the variables' effects do not differ and all outcomes are drawn from the same population is true, then the means of all outcome groups approximate each other. To test the hypothesis, the variability between group means is compared to that within groups using the*F-*test; if their ratio approximates 1.0 then the null hypothesis cannot be rejected. When a single independent variable is tested the method is sometimes called*one-way ANOVA;*when multiple independent variables are tested, N-*way ANOVA.*

*Medical dictionary.
2011.*

### Look at other dictionaries:

**Analysis of variance**— A*nal y*sis of variance, n. (Statistics) a statistical technique by which the results of an observation or experiment are analyzed to determine the relative contributions of the different possible causative factors or variables to the outcome.… … The Collaborative International Dictionary of English**Analysis of variance**— In statistics, analysis of variance (ANOVA) is a collection of statistical models, and their associated procedures, in which the observed variance in a particular variable is partitioned into components attributable to different sources of… … Wikipedia**analysis of variance**— ANOVA; variance analysis 1) A commonly used method for examining the statistically significant differences between the means of two or more populations In its simplest form (one way analysis of variance), it involves only one dependent variable… … Big dictionary of business and management**analysis of variance**— ANOVA; = variance analysis In standard costing and budgetary control, the analysis of variances in order to seek their causes. The total profit variance or production cost variance is analysed into sub variances to indicate the major reasons for… … Accounting dictionary**analysis of variance**— noun a statistical method for making simultaneous comparisons between two or more means; a statistical method that yields values that can be tested to determine whether a significant relation exists between variables • Syn: ↑ANOVA • Topics:… … Useful english dictionary**analysis of variance**— Date: 1918 analysis of variation in an experimental outcome and especially of a statistical variance in order to determine the contributions of given factors or variables to the variance … New Collegiate Dictionary**analysis of variance**— Statistics. a procedure for resolving the total variance of a set of variates into component variances that are associated with defined factors affecting the variates. Also called variance analysis. [1935 40] * * * … Universalium**analysis of variance**— noun A collection of statistical models, and their associated procedures, in which the observed variance is partitioned into components due to different explanatory variables. Syn: ANOVA … Wiktionary**Analysis of Variance**— (ANOVA) Tool used in statistics to apportion observed variance into probable causes, e.g. when used to determine the significance of variances between measurable items in different populations … Expanded glossary of Cycad terms**analysis of variance**— noun a statistical procedure for resolving the total variance of a set of variates into component variances, which are associated with factors affecting the variates … Australian English dictionary