Identify the population, variables, types of variables, type of sampling plan used, and any potential sources...

Identify the population, variables, types of variables, type of sampling plan used, and any potential sources of bias in the following situation. Researchers spend one Saturday night waiting outside of a bar to conduct a survey on attitudes towards drinking and driving. They ask every 5th person who comes out of the bar the number of drinks they had that night, their age, and if they believe that drinking and driving is a serious problem.

Expert Solution

1. Population: Adults

2. Variables:

a. Number of drinks they had that night

b. Their age, and

c. if they believe that drinking and driving is a serious problem (Yes/ No)

3. Types of variables:

a. Number of drinks they had that night - Discrete Quantitative variable

b. Their age - Continuous Quantitative variable

c. If they believe that drinking and driving is a serious problem (Yes / No) - Dichotomous categorical variable

4. Type of sampling plan used: Systematic sampling is used

5. Potential sources of bias in the following situation:

Undercoverage bias is very likely to affect the results and the conclusions from the study.. Undercoverage occurs when certain portion of the population is inadequately represented in the sample. In this case, since people coming out of the bar are more likely to be drinkers, the sample may not represent appropriate number of non-drinkers from the population.

milcah answered 10 months ago

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