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Quiz

Chapter 11

sarah wood 7 Fragen

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Fragen in diesem Quiz (7)

  1. 1Two of the following statements describe a correct probability model. Which statement does not?
    1. AThere is a probability assigned to each event.
    2. BThe sum of all the probabilities is equal to one.
    3. CAll of the probabilities are between negative one and one.
  2. 2Which of the following random variables is continuous?
    1. ATime required to run a mile
    2. BNumber of children in a family
    3. CNumber of books on a shelf
  3. 3True or False: The distribution of a random variable shows all possible values the random variable could take and how often they occur
    1. ARichtig
    2. BFalsch
  4. 4Which one of the following random variables is discrete?
    1. AHeight of an adult male
    2. BGPA
    3. Cnumber of phone calls received in a day
  5. 5Students at a particular university are able to evaluate professors on a five point scale (a score of 1 meaning poor teaching and a score of 5 meaning excellent teaching, with answers limited to whole numbers). What type of random variable is professor evaluation an example of?
    1. Adiscrete
    2. Bcontinuous
    3. Cit is impossible to say given the information provided
  6. 6What does the distribution of a random variable give us?
    1. AThe measure of the amount of deviation of the random variable about the mean.
    2. BA density curve whose x values are always positive.
    3. CAll possible values of the random variable and how often they occur.
  7. 7What is a correct description of the median of a distribution that is described by a density curve?
    1. AThe value in the data set that occurs with the highest frequency.
    2. BThe point that is intermediate between interquartile range and standard deviation.
    3. CThe value that divides the area of the density curve in half.
    4. DThe point at which the distribution "balances".

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Beschreibung
Statistics Quiz am Chapter 11, erstellt von sarah wood am 11/02/2019.
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English
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statistics
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