S
shadowjade
When using the Appendix E from the AIAG SPC Manual, the subgroup size starts at 2 and continues from there.
Our processes produce discreet quantities and it is challenging (at best) to enter data for a 2-piece subgroup. What should I use for A2 (factors for control limts), d2 (divisors for estimate of standard deviation) and D4 (factors for control limits) when faced with a subgroup size of one [1]?
Thanks!
Our processes produce discreet quantities and it is challenging (at best) to enter data for a 2-piece subgroup. What should I use for A2 (factors for control limts), d2 (divisors for estimate of standard deviation) and D4 (factors for control limits) when faced with a subgroup size of one [1]?
Thanks!