The question should result in data with the greatest variability is "How many customers used each of the bank’s 20 ATM machines last week? and is denoted as option B.
This is defined as the extent to which a data or point is spread out and how far apart they lie.
It is characterized by a large number of variables which in this case is getting data from 20 ATMs for seven days. This would result in more values being gotten and is therefore the most appropriate choice for the question with the most variability.
Read more about Variability here https://brainly.com/question/12872866
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