ANOVA(英文版)(ppt 35页)
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ANOVA(英文版)内容提要：
ANOVA is often used for studying the relationship between a response variable (Y) and one or more explanatory or predictor variables (X’s). The predictor variables are also called factors or treatments.
While the response is quantitative, the predictors may be either quantitative or qualitative. However, quantitative predictors are analyzed as if they are qualitative (or categorical).
To study the effect of one or more factors on a response, each factor having two or more levels.
ANOVA can be used to
determine the statistical significance of effects
calculate the components of variance
estimate the contribution to variation by each identified source
estimate the underlying noise within the process
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