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Biases When things affect the sample.

Biases When things affect the sample. Types of Biases: Voluntary Non-response Under-coverage Response. Page 1.2 Name this sampling method. Page 1.2 Name this sampling method. Page 1.3 Name this sampling method. Page 1.3 Name this sampling method. Pg 1.4 Name this sampling method.

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Biases When things affect the sample.

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  1. BiasesWhen things affect the sample. Types of Biases: Voluntary Non-response Under-coverage Response

  2. Page 1.2 Name this sampling method

  3. Page 1.2 Name this sampling method

  4. Page 1.3 Name this sampling method

  5. Page 1.3 Name this sampling method

  6. Pg 1.4 Name this sampling method.

  7. Page 1.4 The picture represents what?

  8. Sometimes there are problems with a sample – these are called biases. Some are accidental and some not…

  9. Vocab: 1 & 2 Types of Biases: Voluntary response I Will ! I Will ! I Will !

  10. Vocab: 3 Types of Biases: I WONT’T I WONT’T Non-response REFUSED REFUSED

  11. What is the difference between Voluntary and Nonresponse Biases? Part B) question and 1b)

  12. Vocab: 4 Types of Biases: Undercoverage

  13. Vocab: 5 Quest: C) Types of Biases: Response Should wolfs be allowed in Yellowstone park where families vacation? Should vicious, wild wolfs be allowed in Yellowstone park with vacationing families? or

  14. Pg 2.1-2.2

  15. Pg 3.1-3.2 Hoping to learn what issues may resonate with voters in the coming election, the campaign director for a mayoral candidate selects one block from each of the city’s election districts. Staff members go there and interview all the residents they can find. Identify the following as a team. Population b) population parameter Sampling frame d) the sample e) Sampling method f) potential biases

  16. Pg 4.1-4.2 Dairy inspectors visit farms unannounced and take samples of the milk to test for contamination. If the milk is found to contain dirt, antibiotics, or other foreign matter, the milk will be destroyed and the farm reinspected until purity is restored. Identify the following. Population b) population parameter Sampling frame d) the sample e) Sampling method f) potential biases

  17. Pg 5.1-5.2 State police set up a roadblock to estimate the percentage of cars with up-to-date registration, insurance, and safety inspection stickers. They usually find problems with about 10% of the cars they stop. Identify the following as a team. Population b) population parameter Sampling frame d) the sample e) Sampling method f) potential biases

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