Table 2.

Calculation of the control limits for monitoring the accuracy and precision of cellular uptake. $\overline{\overline{X}}$ corresponds to the average cellular ruthenium amount of eleven independent experiments, $\stackrel{‒}{s}$ is the average standard deviation of parallel experiments.

Accuracy control chart ($\overline{\overline{X}}$)	Precision control chart ($\stackrel{‒}{s}$)
$\mathrm{UCL}=\overline{\overline{X}}+1.954\stackrel{‒}{s}$	UCL = 2.568$\stackrel{‒}{s}$
$\mathrm{LCL}=\overline{\overline{X}}-1.954\stackrel{‒}{s}$	LCL = 0$\stackrel{‒}{s}$