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Strength of correlation (R squared): 0.313 (this correlation is weak)
Percent of respondents who said they smoke 'some days'.
The percentage of students that achieved a scale score in the subject of Reading at or above the level of Basic.
Basic implies partial mastery of prerequisite knowledge and skills that are fundamental for proficient work at each grade.
Source:
Centers for Disease Control and Prevention (CDC). Behavioral Risk Factor Surveillance System Survey Data. Atlanta, Georgia: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, 2004.