Subgroups

$1$

$2$

$3$

$4$

$1$

$1$

$4$

$5$

$1$

$6$

$4$

$6$

$2$

$3$

$6$

$7$

X bar.

$1\mathrm{.}33$

$3\mathrm{.}33$

$4\mathrm{.}67$

$?$

Std Dev.

$0\mathrm{.}58$

$2\mathrm{.}52$

$1\mathrm{.}15$

$?$

Note: The $?$ are missing values that you will have to calculate

Based on X bar bar and Sbar that you calculated before, find the Upper Control Limit $($UCL$)($enter your answer with only two decimals$)$

UCL $=$ X bar bar $+$ A$3($S bar$)$