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- Lesson 14: Sampling In A Fair Way | Unit 8: Probability And Sampling
Lesson 14: Sampling in a Fair Way | Unit 8: Probability and Sampling
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•
Mathematics
•
7th Grade
•
Medium
+2
Standards-aligned
Wayground Content
Used 1+ times
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28 Slides • 4 Questions
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Multiple Choice
The meat department manager at a grocery store is worried some of the packages of ground beef labeled as having one pound of meat may be under-filled. He decides to take a sample of 5 packages from a shipment containing 100 packages of ground beef. The packages were numbered as they were put in the box, so each one has a different number between 1 and 100. Describe how the manager can select a fair sample of 5 packages.
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Multiple Select
Select **all** the reasons why random samples are preferred over other methods of getting a sample.
If you select a random sample, you can determine how many people you want in the sample.
If a random sample is selected, the desired number of people in the sample can be determined.
A random sample is likely to give a sample that is representative of the population.
A random sample is a fair way to select a sample because each member of the population has an equal chance of being selected.
If a random sample is used, the sample mean will always be the same as the population mean.
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Open Ended
Jada is using a computer’s random number generator to produce 6 random whole numbers between 1 and 100 so she can use a random sample. The computer produces the numbers 1, 2, 3, 4, 5, and 6. Should she use these numbers or have the computer generate a new set of random numbers? Explain your reasoning.
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Open Ended
Diego wants to survey a sample of students at his school to learn about the percentage of students who are satisfied with the food in the cafeteria. He decides to go to the cafeteria on a Monday and ask the first 25 students who purchase a lunch at the cafeteria if they are satisfied with the food. Do you think this is a good way for Diego to select his sample? Explain your reasoning.
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