Factors causing sampling error - Metrology & Quality Control

Q.  What are the factors causing sampling error?
- Published on 07 Aug 15

a. method of sample selection
b. sample size
c. both a. and b.
d. none of the above

ANSWER: both a. and b.


  • Sravanthi   -Posted on 27 Oct 15
    - Sampling errors are caused if selected samples do not truly represent the lot. It is a high possibility of accepting bad lot and rejecting good lot.

    - It affects the average quality of the accepted lot.

    - Different factors causing sampling errors are:

    1) Size of sample
    2) Method of sample selection
    3) Non homogeneity of lot

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