DAT 565 Practice Week 2 Knowledge Check

DAT 565 Practice Week 2 Knowledge Check

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Attachments: DAT 565 N2 Practice Week 2 Knowledge Check.docx [ Preview Here ]

  1. Which of the following is a correct statement?
  2. Three randomly chosen Seattle students were asked how many round trips they made to
  3. Three randomly chosen Colorado students were asked how many times they went rock climbing last month. Their replies were 5, 6, 7. The standard deviation is
  4. Item 4 1 of 1 points awarded Item Scored

Using a sample to make generalizations about an aspect of a population is called

  1. Which statement is false?
  2. Which is not a reason why pie charts are popular in business?
  3. Which of these deficiencies would be considered a major graphical deception?
  4. Three randomly chosen Colorado students were asked how many times they went rock climbing last month. Their replies were 5, 6, 7. The coefficient of variation is
  5. Which Excel function would be least useful to calculate the quartiles for a column of data?
  6. A population has groups that have a small amount of variation within them, but large variation among or between the groups themselves. The proper sampling technique is
  7. The Empirical Rule says that
  8. Which is true of skewness?
  9. Craig operates a part-time snow-plowing business using a 2002 GMC 2500 HD extended cab short box truck. This box plot of Craig’s MPG on 195 tanks of gas does not support which statement?
  10. Twelve randomly chosen students were asked how many times they had missed class during a certain semester, with this result: 2, 1, 5, 1, 1, 3, 4, 3, 1, 1, 5, 18. For this sample, which measure of center is least representative of the "typical" student?
  11. To calculate the Pearson 2 coefficient of skewness Sk2 for a sample, we need the
  12. The position of the median is
  13. When a sample has an odd number of observations, the median is the
  14. The mode is least appropriate for
  15. Chebyshev’s Theorem
  16. The midhinge lies halfway between

 

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