Q. 3. The National Center for Drug Abuse is conducting a study to determine to d

Question

Q. 3. The National Center for Drug Abuse is conducting a study to determine to determine if heroin usage among teenagers has changed. Historically, about 1.3 percent of teenagers between the age of 15 and 19 have used heroin one or more times. In recent survey of 1,824 teenagers, 37 indicated they had used heroin one or more times.

a. Identify the population

b. What characteristic of the population is being measured?

c. Identify the sample.

d. Is the study observational or experimental?

e. Is the purpose of the data collection to perform descriptive or

inferential statistics?

f. Is the data qualitative or quantitative?

Explanation / Answer

a. Here population is teenagers.

b. Here we measured heroin usage among teenagers.

c. Here 1,824 teenagers is the sample

d. The researcher has no control over the variables in an observational study. An experiment is a method of applying treatments to a group and recording the effects.

Hence this is observational study

e. Descriptive statistics uses the data to provide descriptions of the population, either through numerical calculations or graphs or tables. Inferential statistics makes inferences and predictions about a population based on a sample of data taken from the population in question.

Hence this is Inferential statistics.

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