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You believe that people who have higher GPAs began smoking marijuana in younger grades. You want...

You believe that people who have higher GPAs began smoking marijuana in younger grades. You want to test this hypothesis. Identify the independent and dependent variables and develop a hypothesis. What is the best SPSS test based on your hypothesis to analyze your data? Would you choose a t-test, a double t-test, an ANOVA, or a chi-square?

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Answer #1

Dependent variable=GPA score (Response: high and low), Independent variable= smoking marijuana (Response: Younger grade or Not)

Use Chi-square for independence (since we believe that people who have higher GPAs began smoking marijuana in younger grades).

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