The CP value is the BEST the Cpk could ever be, IF the point averaged exactly at zero deviaiton, if you want some technical stuff as well.
CP is a measure of HOW MANY TIMES (3 x Sigma) will fit within 1/2 of the tolerance band (yes, 1/2 the total band, it assumes that a zero dev or perfect part is in the exact middle of the tolerance band)
CPK, it is how many times (3 x Sigma) will fit between the AVERAGE and the CLOSEST tolerance limit.
The CP value is the BEST the Cpk could ever be, IF the point averaged exactly at zero deviaiton, if you want some technical stuff as well.
CP is a measure of HOW MANY TIMES (3 x Sigma) will fit within 1/2 of the tolerance band (yes, 1/2 the total band, it assumes that a zero dev or perfect part is in the exact middle of the tolerance band)
CPK, it is how many times (3 x Sigma) will fit between the AVERAGE and the CLOSEST tolerance limit.
