Hello,

I have a question concerning the output of leveneTest. I don't understand
the "7" in my output

Levene's Test for Homogeneity of Variance (center = median)
      Df F value Pr(>F)
group  2  0.0173 0.9829
       7        # Where does this number come from?

Thanks.
Hermann


> res
   group.ID    qtrait
1         0 6462.3288
2         0  816.7808
3         0 6031.3356
4         0 1013.5274
5         0 1517.2500
6         1 1585.2740
7         1 2481.6781
8         1 8871.5753
9         2 4913.5274
10        2  833.7329
> ltest <- leveneTest (qtrait~group.ID, res)
> ltest
Levene's Test for Homogeneity of Variance (center = median)
      Df F value Pr(>F)
group  2  0.0173 0.9829
       7
> dput (res)
structure(list(group.ID = structure(c(1L, 1L, 1L, 1L, 1L, 2L,
2L, 2L, 3L, 3L), .Label = c("0", "1", "2"), class = "factor"),
    qtrait = c(6462.32876712329, 816.780821917808, 6031.33561643836,
    1013.52739726027, 1517.25, 1585.27397260274, 2481.67808219178,
    8871.57534246575, 4913.52739726027, 833.732876712329)), .Names =
c("group.ID",
"qtrait"), row.names = c(NA, -10L), class = "data.frame")

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