Two and Three Class Attributes Sampling Plans by Carmen Chan https://padlet.com/ccarmenchan8282/Samplingplans Are they different? What components do they have? en-us 2016-04-06 08:52:02 UTC 2025-09-27 11:48:04 UTC hello@padlet.com https://padlet-assets.storage.googleapis.com/portrait/rose_close.jpg BerniceLucia https://padlet.com/ccarmenchan8282/Samplingplans/wish/170103026

In 2-class attributes sampling plan, there are three important numbers, n, c & m. 

In 3-class attributes sampling plan, there are four important numbers, n, c, m & M. 

]]> 2017-05-05 06:20:49 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/170103026 syahzypanda https://padlet.com/ccarmenchan8282/Samplingplans/wish/170174255 Two class attribute sampling plan:  classifies each sample unit as acceptable (non-defective) or unacceptable (defective). 

Three class attribute sampling plan:  Sample units with a count of less than m are of acceptable or good quality. Units with a count between m and M are judged to be of marginal quality, and units whose counts are greater than M are of unacceptable or bad quality. 

]]> 2017-05-05 13:35:01 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/170174255 Kai Ting https://padlet.com/ccarmenchan8282/Samplingplans/wish/170916726 In a two class sampling plan, only 1 microbiological unit is involved (m).

In a three class sampling plan,  the microbiological limit “m” separates conforming from marginally acceptable and “M” marks the limit beyond which the level of contamination is unacceptable.  

Two Class:
 > c of n samples are > m = REJECT

Three Class:
 > c of n samples are within > m and less than or equals to M
OR
Sample > M = REJECT]]> 2017-05-10 03:58:50 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/170916726 ththreewords https://padlet.com/ccarmenchan8282/Samplingplans/wish/171142679 Two class: Consist of one upper microbial limit and maximum tolerable number of analytical units above the limit denoted by m and c respectively. 

If sample is less than the maximum tolerable number of analytical units = acceptable

Three Class: m separates conforming from marginally acceptable, M defines non-conforming analytical units. C refers to maximum allowable number of marginally acceptable analytical units. 

If samples falls within the range, the food microbial count is acceptable.


]]> 2017-05-11 01:15:01 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/171142679 Yeo Shu Hui https://padlet.com/ccarmenchan8282/Samplingplans/wish/171262422 Difference b/w 2-class & 3-class sampling plan:

2-class samling plan: uses m as the upper microbiological limit on the acceptable concentration in the analytical unit

3-class sampling plan: uses m as the microbiological limit which seperates conforming from marginally acceptable while M as the upper microbiological limit on the acceptable concentration in the analytical unit]]> 2017-05-11 14:13:22 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/171262422 Ann https://padlet.com/ccarmenchan8282/Samplingplans/wish/324896149 2019-01-28 13:22:49 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/324896149 https://padlet.com/ccarmenchan8282/Samplingplans/wish/416529425 2019-11-26 07:24:17 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/416529425 https://padlet.com/ccarmenchan8282/Samplingplans/wish/502069596 2020-04-10 14:16:33 UTC https://padlet.com/ccarmenchan8282/Samplingplans/wish/502069596