1.1 EXERCISES 6 CHAPTER 1 Introduction to Statistics For Extra Help: MyLab Statistics Building Basic Skills and Vocabulary 1. How is a sample related to a population? 2. Why is a sample used more often than a population? 3. What is the difference between a parameter and a statistic? 4. What are the two main branches of statistics? True or False? In Exercises 5–10, determine whether the statement is true or false. If it is false, rewrite it as a true statement. 5. A statistic is a numerical description of a population characteristic. 6. A sample is a subset of a population. 7. It is impossible to obtain all the census data about the U.S. population. 8. Inferential statistics involves using a population to draw a conclusion about a corresponding sample. 9. A population is the collection of some outcomes, responses, measurements, or counts that are of interest. 10. A sample statistic will not change from sample to sample. Classifying a Data Set In Exercises 11–20, determine whether the data set is a population or a sample. Explain your reasoning. 11. The salary of each employee of an advertising firm 12. The amount of energy collected from every solar panel on a photovoltaic power plant 13. A survey of 250 members from an organized union of over 20,000 members 14. The annual revenue of each team in a pro sports league 15. The carbon monoxide levels of 12 of 49 people who escaped a burning building 16. The number of electoral college votes for each state in the U.S. and the District of Columbia 17. The number of guests in each room of a hotel 18. The amount spent by every tenth person cashing out at a store 19. The nationality of every person passing through a customs station 20. The precipitation amounts at 15 locations in a county Graphical Analysis In Exercises 21–24, use the Venn diagram to identify the population and the sample. 21. Parties of Registered Voters Parties of registered voters who respond to a survey Parties of registered voters who do not respond to a survey 22. Meal Plan Choices of College Students Meal plan choices of freshmen Meal plan choices of all college students other than freshmen
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