According to the 2006 Monitoring the Future Survey

question 15

Multiple Choice

According to the 2006 Monitoring the future survey,

• A)cigarettes was the most frequently used drug
• B)tobacco was the most frequently used drug
• C)alcohol was the most frequently used drug
• D)alcohol and cigarettes was the most frequently used drugs

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Definitions:

Marginal Mean

The average value of a variable across levels of another variable, often used in the context of multivariate data analysis.

Marginal Means

The mean scores for each level of a factor averaged over the levels of other factors in a multifactorial experiment, often used in the analysis of variance.

Significant Main Effect

An outcome in statistical analysis indicating that the independent variable has a statistically meaningful impact on the dependent variable.

Variable

Property or characteristic of an object, event, or person that can take on different values.