Sample Size, n	Mean Factor, A2	Upper Range, D4	Lower Range, D3
2	1.880	3.268	0
3	1.023	2.574	0
4	0.729	2.282	0
5	0.577	2.115	0
6	0.483	2.004	0
7	0.419	1.924	0.076
8	0.373	1.864	0.136
9	0.337	1.816	0.184
10	0.308	1.777	0.223
12	0.266	1.716	0.284

Ross Hopkins is attempting to monitor a filling process that has an overall average of 725 mL. The average range R is 6 mL.

For a sample size of 10, the control limits for 3-sigma x chart are:

Upper Control Limit

(UCLx)

=

mL

(round your response to three decimal places).

Lower Control Limit

(LCLx)

=

mL

(round your response to three decimal places).

The control limits for the

3-sigma

R-chart are:

Upper Control Limit

(UCLR)

=

mL

(round your response to three decimal places).

Lower Control Limit

(LCLR)

=

mL

(round your response to three decimal places).