如何在R中解释双向方差分析表(lmer)的输出?
我有一个2 x 2的析因设计(“密度”,“肥料”),以块为随机效应。我试图预测植物的生长。我如何解释这张表?我已经检查过了,没有交互作用,它遵循方差分析的假设如何在R中解释双向方差分析表(lmer)的输出?,r,lme4,anova,R,Lme4,Anova,我有一个2 x 2的析因设计(“密度”,“肥料”),以块为随机效应。我试图预测植物的生长。我如何解释这张表?我已经检查过了,没有交互作用,它遵循方差分析的假设 Sample data: density <- c("low","low","low","low","high",high",high","high") fertilizer <- c("N","N","P","P","N","N","P","P") growth <
Sample data:
density <- c("low","low","low","low","high",high",high","high")
fertilizer <- c("N","N","P","P","N","N","P","P")
growth <- c(1,1,2,2,5,6,2,1)
model <- lmer(growth~density + fertilizer + (1|block))
Output:
Fixed effects:
Estimate Std. Error df t value Pr(>|t|)
(Intercept) 0.63351 0.06275 62.79670 10.096 8.92e-15 ***
densityHigh 0.12473 0.07502 85.99111 1.663 0.100
fertlizerP 0.01209 0.00602 76.42369 0.422 0.005 **
示例数据:
密度N与p不同,与密度水平无关,或2x2设计的精度更高:N与p的密度平均值不同。或者:如果密度保持不变,肥料从N改为P,则生长增加0.012
而且虽然这应该是交叉验证,但data.frame中的块是什么?