DEFINITION of 'Analysis Of Variances  ANOVA'
An analysis of the variation between all of the variables used in an experiment. Analysis of variance is used in finance in several different ways, such as to forecasting the movements of security prices by first determining which factors influence stock fluctuations. This analysis can provide valuable insight into the behavior of a security or market index under various conditions.
INVESTOPEDIA EXPLAINS 'Analysis Of Variances  ANOVA'
This type of analysis attempts to break down the various underlying factors that determine the price of securities as well as market behavior. For example, it could possibly show how much of a security's rise or fall is due to changes in interest rates. A ttest and ftest is used to analyze the results of an analysis of variance test to determine which variables are of statistical significance.

Variance
The spread between numbers in a data set, measuring Variance ... 
TTest
A statistical examination of two population means. A twosample ... 
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A statistical test used to determine whether or not different ... 
Standard Deviation
1. A measure of the dispersion of a set of data from its mean. ... 
Mean
The simple mathematical average of a set of two or more numbers. ... 
Covariance
A measure of the degree to which returns on two risky assets ...

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