本研究按来源(专家对吸引力)和论点(强与弱)随机分组,分为监视器型(高与低)。我想测试一下主要效应的意义,双向相互作用,以及以下数据的三种交互作用--特别是,
主要效果=自我监控(高与低),争论(强与弱),源(吸引与专家)
双向交互=自监视器_参数,自监视器_源,参数*源
三向交互=自监视器_参数源
这是代码:
data<-data.frame(Monitor=c(rep("High.Self.Monitors", 24),rep("Low.Self.Monitors", 24)),
Argument=c(rep("Strong", 24), rep("Weak", 24), rep("Strong", 24), rep("Weak", 24)),
Source=c(rep("Expert",12),rep("Attractive",12),rep("Expert",12),rep("Attractive",12),
rep("Expert",12),rep("Attractive",12),rep("Expert",12),rep("Attractive",12)),
Response=c(4,3,4,5,2,5,4,6,3,4,5,4,4,4,2,3,5,3,2,3,4,3,2,4,3,5,3,2,6,4,4,3,5,3,2,3,5,5,7,5,6,4,3,5,6,7,7,6,
3,5,5,4,3,2,1,5,3,4,3,4,5,4,3,2,4,6,2,4,4,3,4,3,5,6,4,7,6,7,5,6,4,6,7,5,6,4,4,2,4,5,4,3,4,2,3,4))
data$Monitor<-as.factor(data$Monitor)
data$Argument<-as.factor(data$Argument)
data$Source<-as.factor(data$Source)
我想要获得主要的效果,以及所有的双向互动和三方互动。但是,如果输入anova(lm(Response ~ Monitor*Argument*Source, data=data))
,则获得:
Analysis of Variance Table
Response: Response
Df Sum Sq Mean Sq F value Pr(>F)
Monitor 1 24.000 24.0000 13.5322 0.0003947 ***
Source 1 0.667 0.6667 0.3759 0.5413218
Monitor:Source 1 0.667 0.6667 0.3759 0.5413218
Residuals 92 163.167 1.7736
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
如果我进入summary(aov(Response ~ Monitor*Argument*Source, data=data))
Call:
lm.default(formula = Response ~ Monitor * Argument * Source,
data = data)
Residuals:
Min 1Q Median 3Q Max
-2.7917 -0.7917 0.2083 1.2083 2.5417
Coefficients: (4 not defined because of singularities)
Estimate Std. Error t value Pr(>|t|)
(Intercept) 3.4583 0.2718 12.722 < 2e-16 ***
MonitorLow.Self.Monitors 1.1667 0.3844 3.035 0.00313 **
ArgumentWeak NA NA NA NA
SourceExpert 0.3333 0.3844 0.867 0.38817
MonitorLow.Self.Monitors:ArgumentWeak NA NA NA NA
MonitorLow.Self.Monitors:SourceExpert -0.3333 0.5437 -0.613 0.54132
ArgumentWeak:SourceExpert NA NA NA NA
MonitorLow.Self.Monitors:ArgumentWeak:SourceExpert NA NA NA NA
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 1.332 on 92 degrees of freedom
Multiple R-squared: 0.1344, Adjusted R-squared: 0.1062
F-statistic: 4.761 on 3 and 92 DF, p-value: 0.00394
有什么想法或想法吗?
编辑
发布于 2015-11-09 09:30:35
你的数据并不像你说的那样是随机的。为了估计三种因素的交互作用,你必须有一组“低”、“强”和“专家”三种因素的组合。你没有这样的团体。
看:
table(data[,1:3])
例如。
https://stackoverflow.com/questions/33605362
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