How far do US workers travel to get to their jobs? To estimate the average distance workers travel, a website includes a survey where adults can share their daily commute distance. What are the population and sample in this setting?
Answer
A
The population is all US workers. The sample is adults who respond to the survey.
B
The population is all visitors to the website. The sample is adults who respond to the survey.
C
The population is all US workers. The sample is the mean distance of adults who respond to the survey.
D
The population is all adults who respond to the survey. The sample is the average commute distance of adults who respond.
Explanation
The population is the full group the website wants information about: all US workers. The sample is the smaller group from which data are actually collected: the adults who respond to the survey. The mean commute distance is a statistic calculated from the sample, not the sample itself.
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