lots of sample ranges indicate that the most recent value is below the lower control limit$.$ What course of action would you$$ recommend?

Part $2$

A$.$

One value outside the control limits is insufficient to warrant any action.

B$.$

Lower than expected dispersion is a desirable$$ condition; there is no reason to investigate.

C$.$

Since there is no obvious pattern in the$$ measurements, variability is in control.

D$.$

The process is out of$$ control; reject the last units produced.

E$.$

Variation is not in$$ control; investigate what created this condition