> speed <- read.table("C:/Users/郭恒辰/Desktop/数据补充/使用lmm线性混合模型/语速.csv", header = TRUE, sep = ",", colClasses = c("character", "numeric", "numeric"), stringsAsFactors = FALSE)speed$Subject <- as.factor(speed$Subject) Error: unexpected symbol in "speed <- read.table("C:/Users/郭恒辰/Desktop/数据补充/使用lmm线性混合模型/语速.csv", header = TRUE, sep = ",", colClasses = c("character", "numeric", "numeric"), stringsAsFact"

这个错误提示是因为你在输入代码时，将代码分成了两行，导致语法错误。你需要将两行代码合并成一行，或者使用换行符`\`将代码连接起来。例如：

speed <- read.table("C:/Users/郭恒辰/Desktop/数据补充/使用lmm线性混合模型/语速.csv", header = TRUE, sep = ",", colClasses = c("character", "numeric", "numeric"), stringsAsFactors = FALSE)
speed$Subject <- as.factor(speed$Subject)

需要修改为：

speed <- read.table("C:/Users/郭恒辰/Desktop/数据补充/使用lmm线性混合模型/语速.csv", header = TRUE, sep = ",", colClasses = c("character", "numeric", "numeric"), stringsAsFactors = FALSE); speed$Subject <- as.factor(speed$Subject)

或者将两行代码用`\`连接起来，如下所示：

speed <- read.table("C:/Users/郭恒辰/Desktop/数据补充/使用lmm线性混合模型/语速.csv", header = TRUE, sep = ",", colClasses = c("character", "numeric", "numeric"), stringsAsFactors = FALSE) \
         ; speed$Subject <- as.factor(speed$Subject)

这样就可以顺利运行代码了。