问题描述
我想说明，两组（Experimentalgruppe 和 Kontrollgruppe）之间的最大摄氧量是否存在显着变化。 因此，我必须使用以下数据对依赖变量进行 zwo t 检验（在 t0/t1 和 t1/t2 之间）：
# A tibble: 18 x 4
group `t0 VO2 max` `t1 VO2 max` `t2 VO2 max`
<chr> <dbl> <dbl> <dbl>
1 Experimentalgruppe 47.6 47.9 48.7
2 Kontrollgruppe 47.6 46.5 43.0
3 Experimentalgruppe 47.6 48.7 48.7
4 Kontrollgruppe 46.8 47.6 46.2
5 Kontrollgruppe 44.6 46.2 47.9
6 Experimentalgruppe 41.3 42.1 42.4
7 Kontrollgruppe 38 40.7 38.6
8 Experimentalgruppe 43.5 44.6 42.7
9 Experimentalgruppe 41.9 43.2 43.8
10 Kontrollgruppe 45.1 47.9 49.2
11 Experimentalgruppe 44.1 44.3 44.9
12 Kontrollgruppe 28.5 30.9 30.3
13 Kontrollgruppe 38.6 41.6 42.1
14 Kontrollgruppe 44.6 45.4 47.6
15 Kontrollgruppe 40.4 43.0 42.4
16 Experimentalgruppe 32.6 33.3 33.3
17 Experimentalgruppe 40.4 38.6 43.0
18 Kontrollgruppe 44.3 40.1 42.7
dput 在这里：
> dput(data)
structure(list(group = c("Experimentalgruppe","Kontrollgruppe","Experimentalgruppe","Kontrollgruppe"),`t0 VO2 max` = c(47.6,47.6,46.7818181818182,44.6,41.3,38,43.5090909090909,41.8727272727273,45.1454545454545,44.0545454545455,28.475,38.6,40.4,32.6,44.3272727272727
),`t1 VO2 max` = c(47.8727272727273,46.5090909090909,48.6909090909091,46.2363636363636,42.1454545454545,40.7,43.2363636363636,47.8727272727273,44.3272727272727,30.9333333333333,41.6,45.4181818181818,42.9636363636364,33.2666666666667,40.1),`t2 VO2 max` = c(48.6909090909091,42.4181818181818,42.6909090909091,43.7818181818182,49.2363636363636,44.8727272727273,30.2666666666667,42.6909090909091)),row.names = c(NA,-18L),class = c("tbl_df","tbl","data.frame"))
因为我对 R 很陌生，所以我不知道如何做到这一点。
t.test(Vo2Max.Auswertung$`t1 VO2 max`,Vo2Max.Auswertung$`t2 VO2 max`,paired = TRUE,alternative = "less")
这是一个有效的 t 检验，但没有分为两组。我的错误在哪里？
解决方法
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