Ashford BUS 308 Week 1 Quiz

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).

  Student Answer:   narrower than

      wider than

     the same as

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

  Student Answer:    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.

  Student Answer:     True

     False

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

  Student Answer:    range

     mode

     mean

     median

 5. Question : Measurements from a population are called

  Student Answer:   statistics.

      observations.

     variables.

     inferences.

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

  Student Answer:   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.

  Student Answer:   Population mean

     Population mode

      Population median

     Population standard deviation

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

  Student Answer:    range

     mode

     mean

     median

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

  Student Answer:    25th

     50th

     75th

     100th

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

  Student Answer:   measurement.

     sample.

     observation.

      variable.