signatures$).$

Figure $5\mathrm{.}5$: Records with late and unsigned physician orders

Create a $p$ chart showing the weekly results over the $20-$week study period. Use the Excel template provided by your instructor to create the chart or create it without a template by completing the

following steps:

Calculate the center line for the nonconformance rate for the study period. The center line is the average number of records that were found to be nonconforming for the entire study period $($for

example, did not meet signature timeliness requirements$).$ Use the following formula to calculate the center line:

$\frac{?}{\text{b}\text{a}\text{r}}(p)=\frac{\text{T}\text{o}\text{t}\text{a}\text{l}\text{n}\text{u}\text{m}\text{b}\text{e}\text{r}of\text{n}\text{o}\text{n}\text{c}\text{o}\text{n}\text{f}\text{o}\text{r}\text{m}\text{i}\text{n}\text{g}\text{r}\text{e}\text{c}\text{o}\text{r}\text{d}\text{s}in\text{s}\text{a}\text{m}\text{p}\text{l}\text{e}\text{s}\text{b}\text{e}\text{i}\text{n}\text{g}\text{c}\text{o}\text{n}\text{s}\text{i}\text{d}\text{e}\text{r}\text{e}\text{d}}{\text{T}\text{o}\text{t}\text{a}\text{l}\text{n}\text{u}\text{m}\text{b}\text{e}\text{r}of\text{r}\text{e}\text{c}\text{o}\text{r}\text{d}\text{s}\text{r}\text{e}\text{v}\text{i}\text{e}\text{w}\text{e}\text{d}in\text{s}\text{a}\text{m}\text{p}\text{l}\text{e}\text{s}\text{b}\text{e}\text{i}\text{n}\text{g}\text{c}\text{o}\text{n}\text{s}\text{i}\text{d}\text{e}\text{r}\text{e}\text{d}}$

Calculate the $3$ sigma upper control limit $($UCL$)$ and the lower control limit $($LCL$)$ for the nonconformance rates for the study period using the following formulas:

UCLp$\frac{?}{b}=ar(p)+3\sqrt[\phantom{2}]{\frac{(\frac{?}{\text{b}\text{a}\text{r}}(p))(1-(\frac{?}{\text{b}\text{a}\text{r}}(p)))}{n}},$UCLp$\frac{?}{b}=ar(p)-3\sqrt[\phantom{2}]{\frac{(\frac{?}{\text{b}\text{a}\text{r}}(p))(1-(\frac{?}{\text{b}\text{a}\text{r}}(p)))}{n}}$

$($Note: $n$ is the number of items in each sample size$)$

Create the control chart. It should contain each week's results, the center line, and the UCL and the LCL$.$ Be sure to label the data increments on the $y-$axis, the week numbers on the $x-$axis, the center

line, the UCL, and the LCL$.$