MINSAMPLE Subcommand (SPCHART command)
MINSAMPLE
specifies the minimum sample size for X-bar, R, or s charts, as
well as process capability charts when the data are organized in subgroups.
When you specify XR
, XS
, or CPCHART
on SPCHART
, any subgroup with
a size that is smaller than the size that is specified on MINSAMPLE
is excluded from the chart and
from all computations. If each case is a subgroup, there must be at
least as many variables named as the number that is specified on MINSAMPLE
. The default, as well as the minimum,
is 2.