The estimation of the process standard deviation for any individuals control chart is expressed as ____ in the terms of
Posted: Thu Jul 14, 2022 1:47 pm
a) \(\widehat{σ_2}=\frac{s}{c_4}\)
b) \(\widehat{σ_2}=\frac{s}{c_1}\)
c) \(\widehat{σ_2}=\frac{s}{c_2}\)
d) \(\widehat{σ_2}=\frac{s}{c_3}\)
b) \(\widehat{σ_2}=\frac{s}{c_1}\)
c) \(\widehat{σ_2}=\frac{s}{c_2}\)
d) \(\widehat{σ_2}=\frac{s}{c_3}\)