Data were collected on a quantitative measure with a subgroup size of seven observations. Thirty sub...

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Answer 1

Answer #1

A.

Since the sample size is 7,

Then,

Value of A2 = .419

Value of D3 = .076

Value of D4 = 1.924

B.

For R chart,

UCL = D4*R Bar

UCL = 1.924*6.4

UCL = 12.314

LCL = D3*R Bar = .076*6.4

LCL =.486

C.

For X bar chart

UCL = X double bar + A2*R

UCL = 47.05 + .419*6.4

UCL= 49.732

LCL = X double bar - A2*R

LCL = 47.05 - .419*6.4

LCL = 44.368

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Answer 2

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