You are a fraud investigator working with complex data sets. you decide to the split the data sets into case-specific groupings. this process is known .
a. stratification
b. deviation
c. data mining
d. soundex

Splitting the data sets into case-specific groupings is known as Stratification.

Explanation:

Stratification is a way of arranging the data or group of the data according to a particular category. It is mainly referred to as the social system or formation of grouping.

Like we group the seeds for planting or the material to build a house, in the same way, we divide the data sets in some case-specific group or group the data in a particular way.

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?