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Importance of Margin of error in statistics

S-IC.4: I CAN develop a margin of error through the use of simulation models for random sampling. Importance of Margin of error in statistics. https:// www.youtube.com/watch?v=owQnG8-42lA. Margin of error.

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Importance of Margin of error in statistics

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  1. S-IC.4: I CAN develop a margin of error through the use of simulation models for random sampling.

  2. Importance of Margin of error in statistics • https://www.youtube.com/watch?v=owQnG8-42lA

  3. Margin of error • The margin of error is an amount (usually small) that is allowed for in case of miscalculation or change of circumstances. • ------------------------------------------------------------------------------- • The margin of erroris a statistic expressing the amount of random sampling error in survey’s results. It asserts a likelihood (not a certainty) that the result from a sample is close to the number you would get if the whole population had been a part of the study. • The larger the margin of error, the less confident you should be that the poll's reported results are close to the true figures; that is, the figures for the whole population. • The larger the denominator, the less the margin of error. • ---------------------------------------------------------------------------------- • The margin of error helps you find the interval in which the population’s average is likely to be true. The margin of error is based on the size of the sample and the confidence level desired.

  4. Margin of Error is the range of values above and below the sample statistics. It provides the interval that shows how much the responses from the sample would differ from the population Margin of Error

  5. If 900 high school freshmen were randomly selected for a national survey, what is the margin of error? Margin of Error

  6. If 900 high school freshmen were randomly selected for a national survey, what is the margin of error? Margin of Error

  7. In a survey of 3247 people, 41% said that they are satisfied with the government’s performance. Part A: What is the margin of error for the survey? Part B: Find the interval that is likely to contain the percentage of the population that is satisfied with the government.

  8. In a survey of 3247 people, 41% said that they are satisfied with the government’s performance. Part A: What is the margin of error for the survey? Margin of Error

  9. In a survey of 3247 people, 41% said that they are satisfied with the government’s performance. Part B: Find the interval that is likely to contain the percentage of the population that is goes to the movies at least once a month.

  10. In a survey of 853 random people found that 62% go to the movies at least once a month. Part A: What is the margin of error for the survey? Part B: Find the interval that is likely to contain the percentage of the population that is satisfied with the government.

  11. In a survey of 853 random people found that 62% go to the movies at least once a month. Part A: What is the margin of error for the survey? Margin of Error Part B: Find the interval that is likely to contain the percentage of the population that is satisfied with the government.

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