In estimating process capability it is vital that a) Standard deviation is smaller b) At least 200 items are measured c) Cpk must be computed d) X-bar and R charts are used e) None of the above

In estimating process capability it is vital that a) Standard deviation is smaller b) At least 200 items are measured c) Cpk must be computed d) X-bar and R charts are used e) None of the above