Alteryx Foundation Micro-Credential Practice Exam

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Which of the following illustrates a set of independent data?

Set of colors
Phone numbers
Test scores
Ranked preferences

The correct answer is: Phone numbers

Independent data refers to data points that do not influence one another, meaning the value or characteristic of one data point does not affect the others. In the case of phone numbers, each phone number is unique to an individual and does not relate to or depend on the value of another phone number. This independence signifies that a change or specific value of one phone number has no bearing on any other. In contrast, the other options display relationships or dependencies between their data points. For example, colors can relate in terms of color theory, test scores might be correlated based on performance trends, and ranked preferences imply a relational structure where one choice may influence another's ranking. Thus, phone numbers stand out as a prime example of independent data.