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Using Statistics to Gain Information STUDENT ACTIVITY ONE Work collaboratively through the slideshow. Random Sampling Representative Samples Populations. Vocabulary to know. Population the entire collection of people or things that you are interested in - PowerPoint PPT Presentation

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<p>Using Statistics to Gain Information Work collaboratively through the slideshow.</p>
<p>Using Statistics to Gain InformationSTUDENT ACTIVITY ONEWork collaboratively through the slideshow.Random SamplingRepresentative SamplesPopulationsVocabulary to know.Population the entire collection of people or things that you are interested in</p>
<p>Sample a subset of some of the units in the population</p>
<p>Random Sample a subset taken from a population in a random way. This would be a sample set up so that each member of the target population has an equally likely chance of occurring.</p>
<p>Representative Sample - This is a sample in which every member of the population has an equal chance of being included in the sample. Random sampling is the best way to produce a representative sample that will support valid inferences. </p>
<p>SoDillard Drive Middle School is considering the following locations for a 7th grade Field Trip: science museum, state park or Ballet Company. The principal wants to survey a sample of students to find which location the 7th graders would prefer. Discuss whether the following are good surveys and why they are or why they are not. </p>
<p>The principal surveys the members of the science club for the sampleThe principal surveys every tenth student to walk into the middle school on a given morning.The principal surveys a group of randomly selected 7th grade girls. What is YOUR suggestion for a good survey to determine the location that 7th Grade students would prefer?We thinkDiscuss and answer whether the sample is representative of the population. What is the population? You decide!</p>
<p>You want to know what type of music students at your school like the best. You ask a group of your friends which music they like. Population: Is sample representative?You want to know which type of food students at Apex High like best. You ask every20th student in the Apex High yearbook.Population: Is sample representative?You want to know how many hours 6th graders in your school spend on the computer each day. You ask random students as they leave for the busses and carpool. Population: Is sample representative?You want to know how many hours students in middle school exercise each week. You send a survey out to every middle school athletic team in Wake County. Population: Is sample representative?Suppose you are taking a poll of students in your grade to see whom they are going to select in the election for student council president. Describe one way you could find a sample that is representative of the population. Suppose you are taking a poll of students in your grade to see whom they are going to select in the election for student council president. Describe one way you could find a sample that is representative of the population. Enter your description here: </p>
<p>The owners of Bear Rock Caf and Bloomsbury Bistro have been discussing the types of customers they serve. In their discussion they found that they should learn more about the types of customers that dine at their restaurants so they each decided to conduct a survey to find their customers ages and the price they would expect to pay for an entre. Should they survey the first 15 women dressed in business attire? Is this sample representative of the population? </p>
<p>Should they survey every 5th customer at lunch? Is this sample representative of the population? </p>
<p>Describe a survey method that you think would give the restaurant owners a representative sample of the population. </p>
<p>The table below shows age data the owners of each restaurant gathered from a representative sample. 344145672319453456632917231814282124Bloomsbury BistroBear Rock CafeWhat questions might you ask about this data collection? </p>
<p>What is the mean age for each restaurants customers according to the data? </p>
<p>What does this mean tell you about the customers that each restaurant attracts? </p>
<p>The owners of these two restaurants are deciding how to advertise their restaurants. They want to advertise to the group of customers that they expect will want to dine with them. Give some recommendations to each owner about how and where they should advertise.</p>