Using the following data points from these $5$ ?sub $-$ groups, calculate $\stackrel{?}{x},R\frac{,}{b}ar(\stackrel{?}{x})\frac{,}{b}ar(R)$ ?:

Round your calculations to three decimal places.

$\frac{?}{\text{b}\text{a}\text{r}}(\stackrel{?}{x})=$

$\frac{?}{\text{b}\text{a}\text{r}}(R)=$

Calculate the UCL and LCL for the $\stackrel{?}{x}-$ chart:

$A_2=$

$UC{L}_{\stackrel{?}{x}}=$

$LC{L}_{\stackrel{?}{x}}=$