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ANOVA repeated mesures
2 messages · Mª Teresa Martinez Soriano, PIKAL Petr
4 days later
Hi You have only single value for each participant in each gruppo and AFAIK you can not do statistic on single value. You can check differences among participants fit<-lm(valor~participantes, data=df2)
fit<-lm(valor~participantes, data=df2) anova(fit)
Analysis of Variance Table
Response: valor
Df Sum Sq Mean Sq F value Pr(>F)
participantes 7 5.167 0.7381 0.3163 0.9358
Residuals 16 37.333 2.3333
and in groups
fit<-lm(valor~grupo, data=df2) anova(fit)
Analysis of Variance Table
Response: valor
Df Sum Sq Mean Sq F value Pr(>F)
grupo 2 22.75 11.3750 12.095 0.0003202 ***
Residuals 21 19.75 0.9405
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Regards Petr
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of Ma Teresa Martinez Soriano
Sent: Wednesday, December 18, 2013 4:17 PM
To: r-help at r-project.org
Subject: [R] ANOVA repeated mesures
Hi to everyone, I am tring to make a Anova with repeated measures,my
data set looks like:
participantes <- c("1", "2", "3", "4", "5", "6", "7", "8", "1", "2",
"3", "4", "5", "6", "7", "8", "1", "2", "3", "4", "5", "6", "7", "8")
grupo <- factor(c(rep("A", 8), rep("B", 8), rep("C", 8)))valor <- c(1,
2, 4, 1, 1, 2, 2, 3, 3, 4, 4, 2, 3, 4, 4, 3, 4, 5, 3, 5, 5, 3, 4,
6)df2 <- data.frame(participantes, grupo, valor)
I want to find if there is differences in the "grupo" in each
participant. I don't know how to find this p-value for each
participant, could you help me, please??Thanks a lot
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