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A school district wanted to understand how family income affects student performance on standardized tests like the SAT. So they collected information from a random

A school district wanted to understand how family income affects student performance on standardized tests like the SAT. So they collected information from a random sample of test takers over a previous five year period, and examined the relationship between family income and SAT score over those prior years.

  1. This is a: (choose one answer) Survey, Experiment, Prospective Study, Retrospective Study
  2. What is the explanatory variable?
  3. What is the response variable
  4. ) If there is a relationship between family income and SAT score, why can't the school district conclude that differences in score are caused by differences in parental income (Hint: Think about the difference between an observational study and an experiment)?

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