A Family Study of Drug Use (Merikangas Et Al

question 9

Multiple Choice

A family study of drug use (Merikangas et al., 1998) found:

• A)relatives infrequently have the same drug disorder
• B)higher alcoholism for relatives of cocaine-dependents
• C)higher alcoholism for relatives of opioid-dependents
• D)higher alcoholism for relatives of alcohol- and cannabis-dependents

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Definitions:

Number

A mathematical object used to count, measure, and label.

Chi-Squared Distribution

A probability distribution widely used in inferential statistics for hypothesis testing and in constructing confidence intervals, especially useful for categorical data.

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or the parameters in a statistical model.

Mean

The average value of a set of numbers, obtained by dividing the sum of all the numbers by the count of numbers.