A Researcher Examining Data on Schools Finds That the Higher

Short Answer

A researcher examining data on schools finds that the higher the average income of the parents whose children attend a school, the higher is the average achievement test score for all students in the school. (a) What is the unit of analysis for these data? (b) Can the researcher conclude from these data that the higher the income of a student's parents, the better the student's achievement test score is likely to be? Why or why not?