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A researcher takes 1000 subjects and divides them into groups based on level of education attained. He then records the time it takes them to complete a crossword puzzle. The researcher is incorporating _______ into the study to reduce variability in responses.

A Researcher Takes 1000 Subjects And Divides Them Into Groups Based On Level Of Education Attained He Then Records The Time It Takes Them To Complete A Crosswor class=

Sagot :

The researcher is arranging experimental units in groups that are similar to each other. That is the definition of Blocking in statistics.

So the answer is B. Blocking.

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