plugin-Chapter 8 Students

plugin-Chapter 8 Students - Measuring CHAPTER 8 THOUGHT...

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CHAPTER 8 Measuring
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THOUGHT QUESTION 1 A local health club is doing a survey to see if there is a relationship between strength and fitness. They want to measure the strength and fitness of a sample of 100 members of the club. Which of these two attributes do you think will be easier for them to measure? Explain.
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THOUGHT QUESTION 2 You are at the beach and want to know the depth of the water at a sandbar that is just offshore. One of your friends (whose height you know) stands on the sandbar and you measure the depth of the water by seeing how much of his body is underwater. You report that the depth is 4 ft., 6 in. Do you think this measurement is accurate? Would you get the same result if you measured it again?
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THOUGHT QUESTION 3 A study on customer service found that there were more customer complaints registered at a large local grocery store in the past year than at a small local market. Is it fair to conclude that the local market had better customer service? What would be a fairer way to present the numbers?
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MEASUREMENT BASICS Thus far, we’ve talked about planning the production of data. We have not discussed how we will measure such data. We measure a property of a person or object when we assign a number to represent the property. We may have a choice of units
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plugin-Chapter 8 Students - Measuring CHAPTER 8 THOUGHT...

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