1 Chapter Review

The jersey numbers of former Chicago Bulls players are: 1,2, 3, 5, 6, 9, 11, 13, 16,20, 22, 26, 32, and 40. Does it make sense to calculate the mean (average) of these numbers?

Which of the following best describes the level of measurement of the data (jersey numbers) from question 1?

A set of data lists the depth (km) of the sources of earthquakes. Are these values discrete or continuous?

Are the earthquake depths from the previous question quantitative data or categorical data?

Which best describes the level of measurement of the earthquake depth data from the previous question?

If you construct a sample by selecting every sixth earthquake from the earthquake data set, the result is a simple random sample (srs).

In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Because the subjects agreed to respond, is the sample a voluntary response sample?

In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Among the adults who responded to the survey question, 21% said that they did smoke. Is that value of 21% an example of a statistic or a parameter?

In the Gallup poll where 21% of adults said they smoked, are the data described the result of an observational study or an experiment?

True or False: If data lead to a conclusion with statistical significance, then the results also have practical significance.