In a national survey of drug abuse the variable drug involve

In a national survey of drug abuse, the variable drug involvement is measured by averaging the responses to 10 questions. Respondents are asked to rate their use of 10 different types of drugs on a 1 (no use) to 5 (frequent use) scale. What is the highest level of measurement that scores on this variable represent? A. Nominal B. Ordinal C. Interval D. Ratio

Solution

Rating drug use could be treated as itemised rating, with a continuous interval of scale. Respondents describe their feelings about the products or brands on scales with logical labels. This is commonly treated as interval level of measurement.

Answer is C