**Ashord 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).**

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.