marijuana use & academic achievement

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Marijuana Use & Academic Achievement. Marion Hughes Sociology 391 Spring 2011. Independent Variable: Marijuana Use. Q. 110: How many days out of the past 30 have you used marijuana? 0 1-5 6-10 11-15 16-20 21+ Recoded into 3 ordinal categories: - PowerPoint PPT Presentation

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Marijuana Use & Academic Achievement

Marijuana Use & Academic AchievementMarion HughesSociology 391Spring 2011Q. 110: How many days out of the past 30 have you used marijuana? 0 1-5 6-10 11-15 16-20 21+

Recoded into 3 ordinal categories: 0 1-5 6 +Independent Variable: Marijuana UseQ14. Please indicate the range that best categorizes your current cumulative grade point average. Dont have one 2.50 or less 2.51 2.67 2.68 3.50 3.51 or higher

Recoded into three ordinal categories: 2.67 or less 2.68 3.50 3.51 or higherDependent Variable: Cumulative GPAStudents who use marijuana will have lower GPAs than students who do not.

The frequency of marijuana use is negatively related to cumulative grade point average.Research hypothesisX2 = 2.177, df = 4, p