IGNOU AST 1 2018 - 25 samples of 6 items each were selected from the assembly line of a m

Question

25 samples of 6 items each were selected from the assembly line of a machine. On
measurement of a critical dimension, the mean X of 25 sample means was reported
as 0.81 inches and ï’ as 0.0025 inches. Compute the control limits for the X and
R charts.

07 Mar 2018

Answer :

Word Count : 146

With $\bar{\bar{r}}=0.81 inches,\bar{r}=0.0025 inches, and = 6,$ the control limits for $\bar{r}$ chart are obtained as $Image ignouacademy-com--p-2018-11896$ $\bar{\bar{r}}$ Image ignouacademy-com--p-items-32669 ________ _________ _____ ______ ___.
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