Decision Flow Chart For Double Sampling Plan

Decision Flow Chart for Double Sampling Plan Select a sample of n1 items for Inspection

Compare Number of defectives (d1) with the acceptance number (c1)and (c2)

YES

NO d1 ≤ 𝑐1

Accept d1 > 𝑐1 NO

YES Reject

C1+1≤d1 ≤ 𝑐2

Let d2 be the number of defectives observed in second sample of size n2

YES

Accept

d1+d2≤ 𝑐2

Figure3: Flow chart-Double sampling

NO

Reject

Decision Flow Chart for a Single Sampling Plan Select a sample of n items for Inspection

Compare Number of defectives (d) With the acceptance number (c)

YES

NO d Reject

Accept

Figure3:Flow chart-Single sampling

Flow Diagram for Rectifying Single Sampling Inspection Plan

Consider a sample of size n from the lot of size N

d

d >c IF

Accept the lot and replaces all defectives found in the sample by non-defectives

Accept the lot by inspecting the entire lot and replace all defectives by nondefectives

Figure4: Flow chart-Rectifying Single sampling

Flow chart for Rectifying Double sampling Inspection Plan Consider a sample of size n1 from the lot of size N for inspection

Compare number of defectives d1 with the acceptance number c1 and c2

d1 > 𝑐2

If d1≤ 𝑐1

Accept t and replace all defective by Non-defective

IF

Reject the lot and inspect the lot 100% and replace all defectives with Non-defectives

c1+1 ≤ 𝑑1

Draw a second sample of size n2 Let d2 be the number of defectives in the second sample

If d1 + 𝑑2 ≤ 𝑐2

Accept the lot and replaces all defectives found in the sample by non-defectives

If d1+d2 >c2

Reject the lot and inspect the lot 100% and replace all defectives by nondefectives

Figure5: Flow chart- Rectifying Double sampling