An object which represents the information required for comparison calculated from either the control, or recovered items.
Objects can be created by calls of the form
new("compitem", ...). Using
two.level.comparison.items is recommended.
a vector of the means for the observations of the item - object of class
count of the number of replicated observations of the item - object of class
count of the number of propoerties observed for the item - object of class
flag indicating whether the observations are multivariate - object of class
the raw observations for the item - object of class
whether any warnings were issued
signature(control = "compitem", recovered = "compitem", background = "compcovar"): ...
Best not to create these directly, use
Aitken, C.G.G. & Lucy, D. (2004) Evaluation of trace evidence in the form of multivariate data. Applied Statistics: 53(1); 109-122.
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