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riley.hively riley.hively
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6 years ago
Professor Hardy has spent the last decade conducting a study of the effects of early childhood wellness programs on subsequent delinquency. Every year, researchers visit participating families and collect a variety of data. Over the course of ten years, many families have moved away and the research staff has been unable to locate them. What problem has Professor Hardy encountered?
 
  a. cross-sectional distortion
  b. cohort distortion
  c. panel attrition
  d. experimental mortality
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elementalsulfurelementalsulfur
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6 years ago
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riley.hively Author
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6 years ago
Thank you, thank you, thank you!
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Yesterday
Brilliant
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2 hours ago
Helped a lot
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