Define P charts in operational management?

Answer 1

In industrial statistics, the p-chart is a type of control chart that monitors the proportion of nonconforming units in a sample. The appropriate data for p-charts are attribute data (conform or non-conform, yes or no, etc.). The subgroup size should ideally be equal, although unequal sample sizes can be accommodated. p-chart # The "p" comes from use of the proportion of nonconforming items # Need a good definition of nonconforming items - usually a categorical definition # Can be of equal or unequal subgroups # Normally need large subgroups - can even be up to total for the period