ezANOVA 中的错误：一个或多个单元格缺少数据答案

【问题标题】：Error in ezANOVA: One or more cells is missing dataezANOVA 中的错误：一个或多个单元格缺少数据
【发布时间】：2021-09-27 19:22:57
【问题描述】：

我有以下代码：

positive %>% ezANOVA(dv = .(Scores), wid = .(ID), within = .(Time), between = .(Group), detailed=TRUE,type=3)

但是，我不断收到错误消息：

ezANOVA_main 中的错误（数据 = 数据，dv = dv，wid = wid，within = within，：一个或多个单元格缺少数据。尝试使用 ezDesign() 检查您的数据。

我看不到数据中的错误！

这是我的数据的最小可重现示例：

structure(list(Group = c("SH", "SH", "SH", "SH", "SH", "SH", 
"SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", 
"SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", 
"SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", 
"SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", 
"SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "SH", "HC", "HC", 
"HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", 
"HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", "HC", 
"HC", "HC", "HC", "HC", "HC", "HC"), Time = c(1, 1, 1, 1, 1, 
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
), Scores = c(18, 24, 31, 11, 14, 23, 17, 19, 10, 16, 22, 19, 
19, 23, 20, 14, 17, 29, 20, 16, 30, 26, 18, 21, 20, 19, 15, 39, 
11, 15, 28, 35, 16, 10, 15, 17, 21, 23, 12, 17, 22, 13, 17, 13, 
17, 18, 19, 17, 16, 24, 20, 22, 19, 18, 24, 13, 24, 28, 24, 26, 
13, 28, 10, 24, 32, 34, 36, 16, 25, 28, 30, 27, 24, 19, 19, 20, 
20, 10, 22, 15, 12, 20, 26, 17, 21, 24, 27, 31, 16), ID = 1:89), row.names = c(NA, 
-89L), class = c("tbl_df", "tbl", "data.frame"))

非常感谢您的帮助！

【问题讨论】：

标签： r statistics tidyverse anova

【解决方案1】：

我不熟悉 ezANOVA，但错误消息表明您的预测变量/自变量的某些组合不存在于您的数据中，并且 ezANOVA 无法处理这种情况。

确实，缺少一些组合：

library(tidyverse)
df %>%
  group_by(Scores, Time, Group) %>% 
  summarise(N=n(), .groups="drop") %>% 
  complete(Scores, Time, Group) 
# A tibble: 108 x 4
   Scores  Time Group     N
    <dbl> <dbl> <chr> <int>
 1     10     1 HC        1
 2     10     1 SH        1
 3     10     2 HC        1
 4     10     2 SH        1
 5     11     1 HC       NA
 6     11     1 SH        2
 7     11     2 HC       NA
 8     11     2 SH       NA
 9     12     1 HC       NA
10     12     1 SH       NA

通过快速浏览ez 文档，我相信ezANOVA 函数仅适用于平衡数据。数据集中的不相等复制意味着它不平衡。您可能需要寻找其他方法。

【讨论】：