Sampling $4$ pieces of precision$-$cut wire $($to be used in computer assembly$)$ every hour for the past $24$ hours has produced the following results:

Develop appropriate control charts and determine whether there is any cause for concern in the cutting process. Plot the information and look for patterns.

Click the icon to view the table of control chart constants $A_2,D_4,D_3.$

Based on the sampling done, the control limits for $3-$sigma $\stackrel{}{x}$ chart are $($round all intermediate calculations to three decimal places before proceeding with further calculations$)$:

Upper Control Limit $(UC{L}_{\frac{?}{\text{b}\text{a}\text{r}}()}^{-})=,cm($round your response to three decimal places$).$