Persistent Poverty and IQ. An article appearing in an issue of the Arizona Republic reported on a study conducted by G. Duncan of the University of Michigan. According to the report, “Persistent poverty during the first 5 years of life leaves children with IQs 9.1 points lower at age 5 than children who suffer no poverty during that period. . . .” Is this statistical study an observational study or is it a designed experiment? Explain your answer.

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Persistent Poverty and IQ. An article appearing in an issue of the Arizona Republic reported on a study conducted by G. Duncan of the University of Michigan. According to the report, “Persistent poverty during the first 5 years of life leaves children with IQs 9.1 points lower at age 5 than children who suffer no poverty during that period. . . .” Is this statistical study an observational study or is it a designed experiment? Explain your answer.

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