Description Usage Arguments Details Value Author(s) See Also Examples
This function applies the two sample t-test to each row or column of a matrix.
1 2 3 |
x |
a numeric |
MARGIN |
either 1 or 2. If |
n1 |
sample size of the first group. It should be smaller than the appropriate |
n2 |
sample size of the second group. It should be smaller than the appropriate |
pool |
logical, indicating if the variance estimate should be pooled. If |
pOnly |
logical, indicating if only a vector of p-values should be returned. |
tOnly |
logical, indicating if only a vector of t-statistics should be returned.
This argument overwrites |
This is a much faster function for "almost" the same purpose of apply
each MARGIN
of
x
a t.test
, i.e., the mean of the first n1
elements is compared with the
mean of the rest n2
elements, for each row or column depending on the MARGIN
.
See the Value section for differences.
If pOnly=TRUE
(the default situation), a numeric vector of p-values is returned, the length of which is determined by MARGIN
.
If tOnly=TRUE
, a numeric vector of t-statistics is returned, the length of which is determined by MARGIN
.
If tOnly=TRUE
and tOnly=TRUE
, a numeric vector of t-statistics is returned, the length of which is determined by MARGIN
, as tOnly
overwrites pOnly
.
If pOnly=FALSE
and tOnly=FALSE
, a list of three components is returned:
stat |
a numeric vector of the t-statistics, one for each row or column, depending on |
df |
a numeric vector of degrees of freedom. If |
p.value |
a numeric vector of p-values, one for each row or column, depending on |
Long Qu
1 2 3 4 5 |
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