1. Day1PopulationandSample.notebook March05,2013AIM: Population and SamplesDo Now1.) What does 3x - 5 subtracted from-4x + 6 equal?2.) Evaluate the following using theorder of operations. -4 -3 5 ( + 22 1 -23)1

2. Day1PopulationandSample.notebookMarch05,2013 Write your favorite color on a piece of paper and hand it forward. 2 3. Day1PopulationandSample.notebook March05,20133 4. Day1PopulationandSample.notebook March05,20134 5. Day1PopulationandSample.notebook March05,2013 Mr.TjerslandisrunningforPresident.Youarehiscampaign managerandyouneedtofindoutwhatpercentageoftheregistered votersinthecountrywillvoteforhim.Thereareafewthingsyou couldtry. OptionI:Callallregisteredvotersonthephoneandaskthemwho theywillvotefor. Althoughthiswouldprovideaveryaccurateresult,itwouldbeavery tediousandtimeconsumingproject.Allregisteredvotersrepresent thepopulationofinteresthere,andabetterapproachwouldbetouse asample. OptionII:Call4registeredvoters,1ineachtimezone,andaskthem whotheywillvotefor. Althoughthisisaveryeasytask,theresultswouldnotbevery reliable.Touseasampletomakeinferencesaboutapopulation,the sampleshouldberepresentativeofthepopulation.Howlikelyisit thatthese4registeredvoterswouldrepresentthepopulationofall registeredvoters?Notvery!Thesampleneedstolookjustlikethe population,butsmaller.5 6. Day1PopulationandSample.notebook March05,2013 You are a three term senator from New York. You want to run for President in 2016. What do you have to do?6 7. Day1PopulationandSample.notebook March05,2013Brainpop7 8. Day1PopulationandSample.notebookMarch05,2013 2.) Read the following definitions: a.) Population: The whole group you can collect data from. b.) Sample: A part of a population. 8 9. Day1PopulationandSample.notebookMarch05,2013Anticipatory Set Answer the following question in a complete sentence.1.) Based on our classs data of favorite colors, can we assumethat this information is accurate for the entire school? Why orwhy not? 9 10. Day1PopulationandSample.notebook March05,2013 Identify the population and sample in each situation.A.) A scientist is studying the diet of wolves in YellowstoneNational Park. Population: Sample:B.) The school librarian surveys 100 students about the types ofbooks they prefer. Population: Sample:C.) The decoration committee asks 25 seventh graders abouttheir ideas for a theme for the seventh grade dance. Population: Sample:10 11. Day1PopulationandSample.notebookMarch05,2013 Is this class a random sample of Great Hollow Middle Schools students? 11 12. Day1PopulationandSample.notebook March05,2013 A marketing representative from a radio station is gathering information from a local middle school about favorite musical groups. State whether each sampling method is random. Explain, in complete sentences. D.) The representative questions the first 20 students who arrive at school on Monday morning. E.) The representative sends a survey to 50 students chosen in the middle of a list of all students (listed alphabetically) provided by the school.12 13. Day1PopulationandSample.notebook March05,2013 A marketing representative from a radio station is gathering information from a local middle school about favorite musical groups. State whether each sampling method is random. Explain, in complete sentences. F.) The representative puts all student names in a hat and selects 30 students to question. G.) The manager of a department store conducts a survey about customer satisfaction. She surveys 50 random shoppers who come into the store on Saturday. What is the population? Is the sampling method random? Explain.13 14. Day1PopulationandSample.notebook March05,2013 KEY QUESTION: What is the question you have to answer to yourself to determine if a sample is random?14 15. Day1PopulationandSample.notebook March05,2013BEFORE YOU LEAVE1.) Why would it be difficult to obtain data from a random sample ofthe population if the United States?2.) How could you make it easier? What tools would you use?15 16. Day1PopulationandSample.notebookMarch05,2013 Mr. Tjerslands Math 7Homework: Homework Sheet 16 17. Attachments Day30SolvingIneqAllOps.notebook