The cum-sqrt-rule is used in order to define H
strata from the auxiliary vector x
.
Depending on some characteristics of x
, e.g. high skewness, few observations or too many ties, the resulting stratification may have a number of strata other than H
. Using forced = TRUE
tries its best to obtain exactly H
strata.
Note that if length(x) < H
then forced
will be set to FALSE
.