7.3 (a) If you suspect that frequent raw material batch changes are behind (b) I

Question

7.3 (a) If you suspect that frequent raw material batch changes are behind (b) If you suspect that accelerated tool wear is behind special-cause vari- (c) If you suspect that very short-lived but somewhat frequent power special-cause variation in a certain process, would consecutive or distributed sampling be best used in collecting the samples? Why? ation, would consecutive or distributed sampling be best used in col- lecting the samples? Why'? ?? surges are behind special-cause variation, would consecutive or dis- tributed sampling be best used in selecting the samples? Why?

Explanation / Answer

ANSWER:-

(a)

In this consecutive sampling be best used in collecting samples.Because in consevconse sampling every subject meeting the inclusion criteria is selected and checked.Here the raw material batch changes ,so consecutive sampling is best compared to distribution sampling.

(b)

If the tool wear is accelerated for some special reason we use the distributed sampling test why because if you follow the same consecutive sampling already tool wear rate is high so we don't up to our next sample it may sustain or not so that we use distributed sampling.

(C)

It is that consecutive sampling is best. It is a consecutively checks the system so that if we have any variations in the very short lived or frequent power surges they must comes under this sampling techniques. In distributed sampling we use random samples.

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