A character string specifying the trial to be summarised.
traits
A character vector specifying the traits to be summarised.
groupBy
A character string specifying a column in TD by which the
summary should be grouped. If NULL, no grouping is done.
what
A character vector indicating which summary statistics should be
computed. If what = "all", all available statistics are computed.
Possible options are:
nVals
The number of values, i.e. non-missing + missing values.
nObs
The number of non-missing observations.
nMiss
The number of missing values.
mean
The mean.
median
The median.
min
The minimum.
max
The maximum.
range
The range (maximum - minimum).
firstQ
The first (25%) quantile.
thirdQ
The third (75%) quantile.
sd
The standard deviation.
seMean
The standard error of mean.
var
The variance.
seVar
The standard error of variance.
CV
The coefficient of variation.
sum
The sum.
sumSq
The sum of squares.
uncorSumSq
The uncorrected sum of squares.
skew
The skewness.
seSkew
The standard error of the skewness.
kurt
The kurtosis.
seKurt
The standard error of the kurtosis.
all
All summary statistics.
Value
A table containing the selected summary statistics.