TE |
Variation.comDr. Wayne Taylor - Taylor Enterprises, Inc. |
Applied Statistics for Engineers and Quality in the FDA Regulated Industries |

**
Sampling Plan Analyzer Help System**

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Level Of Inspection = S3, S4, L-I, L-II and L-III

Lot Size = from 2 on up

Type = Standard Deviation Known - 1 spec - k (Form 1)

Standard Deviation Known - 1 spec - M (Form 2)

Standard Deviation Known - 2 specs - M (Form 2)

Standard Deviation Unknown - 1 spec - k (Form 1)

Standard Deviation Unknown - 1 spec - M (Form 2)

Standard Deviation Unknown - 2 specs - M (Form 2)

Options = normal, tightened, reduced, full switching, switching without reduced inspection

Start: Start using the normal sampling plan.

N to T: If, while on normal inspection, 2 of 5 consecutive lots are rejected, switch to the tightened plan.

N to R: If, while on normal inspection, 10 consecutive lots are accepted, switch to the reduced plan.

T to N: If, while on tightened inspection, 5 consecutive lots are accepted, switch to the normal plan.

R to N: If, while on reduced inspection, a lot is rejected, switch to the normal plan.

The use of the reduced sampling plan is optional. The exact rules are displayed in the

(2) The measurements are normally distributed.

(3) For the standard deviation known plans, it is assumed the standard deviation is consistent over time.

(4) If the switching rules are used, it is assumed that one is inspecting a series lots.