Using the sample data below collected from a local manufacturing company construct an $x$ and $r$ chart and state if the processes are in statistical control. $A2=0\mathrm{.}729,D3=0,D4=2\mathrm{.}282$

$\backslash$table$[[$Sample$,$Observation $1,$Observation $2,$Observation $3,$Observation $4],[1,5\mathrm{.}90,5\mathrm{.}85,6\mathrm{.}20,5\mathrm{.}81],[2,5\mathrm{.}97,6\mathrm{.}04,6\mathrm{.}12,6\mathrm{.}01],[3,5\mathrm{.}70,6\mathrm{.}05,6\mathrm{.}14,5\mathrm{.}83],[4,5\mathrm{.}88,6\mathrm{.}07,5\mathrm{.}85,5\mathrm{.}95]]$