Determine whether the survey question is biased. If the question is biased, suggest a better wording.
Do you agree that the town’s ban on skateboarding in parks is unfair?

In Exercises 9 and 10, determine whether the study is an observational study or an experiment. Explain.

To study the effect of using digital devices in the classroom on exam performance, researchers divided 726 undergraduate students into three groups, including a group that was allowed to use digital devices, a group that had restricted access to tablets, and a control group that was “technologyfree.” (Source: Massachusetts Institute of Technology)

In Exercises 11 and 12, determine whether the data are qualitative or quantitative, and determine the level of measurement of the data set.

The six top-earning states in 2019 by median household income are listed. (Source: U.S. Census Bureau)

1. Maryland 2. New Jersey 3. Hawaii

4. Massachusetts 5. Connecticut 6. Alaska

Which part of the survey described in Exercise 31 represents the descriptive branch of statistics? What conclusions might be drawn from the survey using inferential statistics?

Determine whether the data are qualitative or quantitative, and determine the level of measurement of the data set. Explain your reasoning.

The numbers of employees at fast-food restaurants in a city are listed.

20 11 6 31 17 23 12 18 40 22 13 8 18 14 37 32 25 27 25 18

You collect the test scores of every other student in a class. Is this data set a population or sample?

A report shows the amount (in dollars) spent by each customer in a grocery store. Is this data set a population or sample?

46.5% of all registered voters in a country are registered democrats. Is this a parameter or a statistic?