Stratification is the separation and classification of data into reasonably homogenous categories, within the data, that are mutually exclusive and facilitate:

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Stratification is the separation and classification of data into reasonably homogenous categories, within the data, that are mutually exclusive and facilitate:
A . Data collection efforts
B . Discovery of patterns that would not be observed id data were aggregated
C . Skills that are based more experience than knowledge
D . frustrated measurement process

Answer: B