When a population is skewed to the left or right with a

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Reference no: EM13473566

1. Question : When using the Chebyshev's theorem to obtain the bounds for 99.73 percent of the values in a population, the interval generally will be _______ the interval obtained for the same percentage if normal distribution is assumed (empirical rule).

  • narrower than
  • wider than
  • the same as

2. Question : An example of a qualitative variable is the mileage of a car.

  • True
  • False

3. Question : By taking a systematic sample, in which we select every 100th shopper arriving at a specific store, we are approximating a random sample of shoppers.

  • True
  • False

4. Question : All of the following are measures of central tendency except the

  • range
  • mode
  • mean
  • median

5. Question : Measurements from a population are called

  • statistics.
  • observations.
  • variables.
  • inferences.

6. Question : A normal population has 99.73 percent of the population measurements within ___ standard deviations of the mean.

  • one
  • two
  • three
  • four

7. Question : When a population is skewed to the left or right with a very long tail, what is the best measure to use for central tendency.

  • Population mean
  • Population mode
  • Population median
  • Population standard deviation

8. Question : All of the following are measures of central tendency except the

  • range
  • mode
  • mean
  • median

9. Question : Which percentile describes the first quartile Q1?

  • 25th
  • 50th
  • 75th
  • 100th

10. Question : Any characteristic of a population unit is called a

  • measurement.
  • sample.
  • observation.
  • variable.

Reference no: EM13473566

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