Final answer:
The Most Probable Number (MPN) technique is a statistical procedure used to estimate the number of viable microorganisms in a sample. It is particularly useful when the cells don't grow well in solid medium or when a rapid determination is needed to approximate a group.
Step-by-step explanation:
The Most Probable Number (MPN) technique is a statistical procedure used to estimate the number of viable microorganisms in a sample. It is particularly useful when the cells don't grow well in solid medium or when a rapid determination is needed to approximate a group. The MPN method is commonly used for water and food samples, and it evaluates detectable growth by observing changes in turbidity or color due to metabolic activity.